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Optimizing Your Caffeine Intake With an App

MrSeb writes "Two doctors at Penn State University have developed Caffeine Zone, a free iOS app that tells you the perfect time to take a coffee break to maintain an optimal amount of caffeine in your blood — and, perhaps more importantly, it also tells you when to stop drinking tea and coffee, so that caffeine doesn't interrupt your sleep. By reading through lots of peer-reviewed studies, doctors Frank E. Ritter and Kuo-Chuan Yeh found that a caffeine level of between 200 and 400mg in your bloodstream provides optimal mental alertness, and that you should be below 100mg when you try to sleep. Caffeine Zone plots your caffeination level after you consume caffeine, and warns you if that big afternoon coffee will keep you up at night. It also lets you change the 'optimal' and 'sleep' values if you're particularly resistant or weak to caffeine."

134 comments

  1. Hackable? by wbr1 · · Score: 5, Funny

    Than I can use an Arduino with a bluetooth shield and make it control my IV Drip Mr. Coffee machine?

    Hold on, I am not thinking clearly, my iBarista seems to have crashed.

    --
    Silence is a state of mime.
    1. Re:Hackable? by Anonymous Coward · · Score: 0

      watch out that iBarista is just a Trojan for i3C, Columbian Coffee Cartel. Your first espresso is free, then they have you hooked.

  2. Android version? by Anonymous Coward · · Score: 2, Informative

    Is there an Android version in the works? Or better yet, a desktop app that tells me time to get a cuppa?

    1. Re:Android version? by Anonymous Coward · · Score: 1

      I use Caffeine Tracker (https://market.android.com/details?id=com.cafapppro) - there's also a lite version with a few missing features and adverts but 63p isn't bad.
      I'm not really sure why this iOS app is getting attention seeing as that Android app has been around for a while.

  3. Re:Caffeine by rubycodez · · Score: 4, Insightful

    that's why the heavy caffeine drinkers make sweden and switzerland near the bottom of the list of all country's life expectancies.......oh wait.

    better take up the hobby, and *LIVE* boy.....

  4. Re:Caffeine by Anonymous Coward · · Score: 0

    Bollocks. I find caffeine in small, steady doses to be a perfect alternative to slow-release Ritalin, since it's easier on my blood pressure and doesn't wear off all at once.

  5. Simpler method by ackthpt · · Score: 4, Insightful

    Realize I'm getting edgy and having trouble concentrating --- Stop drinking coffee.

    I've had caffeine problems in the past and am now rolling back to Green Tea. Just enough of a prod. The problem with Coffee is it's a big hit and the subsequent sips provide a declining return on alertness, but an increase in fidgeting, anxiety, etc. A more modest dose from tea and I'm less likely to become accustomed to high levels of caffeine which only serve to keep me at a body-acclimated "normal".

    I appreciate what they're trying to do, but really, each person has their own caffeine profile and has to find where it works and where it doesn't.

    --

    A feeling of having made the same mistake before: Deja Foobar
    1. Re:Simpler method by Osgeld · · Score: 1

      "I appreciate what they're trying to do, but really, each person has their own caffeine profile and has to find where it works and where it doesn't."

      ayep

      I don't drink coffee, so on the odd occasion that I grab a small foam cup at work I find it makes me edgy, and it actually makes me jittery ... breaking concentration. I sometimes drink tea, but tea is a PITA when no one else drinks it, and unlike coffee which I like best black, I cant stand tea without a little sugar in it, which early in the morning gives me heartburn.

    2. Re:Simpler method by Anonymous Coward · · Score: 0

      On the downside you are already somewhat edgy and have trouble concentrating.

    3. Re:Simpler method by PopeRatzo · · Score: 4, Interesting

      I've had caffeine problems in the past and am now rolling back to Green Tea. Just enough of a prod. The problem with Coffee is it's a big hit and the subsequent sips provide a declining return on alertness, but an increase in fidgeting, anxiety, etc. A more modest dose from tea and I'm less likely to become accustomed to high levels of caffeine which only serve to keep me at a body-acclimated "normal".

      Coffee is great in small doses. The huge mugs that Americans favor and the super mega vente that most people buy at the coffee shop is way overkill. I found that coffee was making me edgy until a friend from Europe gave me a set of very nice small cups, maybe six ounces. If I have one of those in the morning, sitting on my back porch with the wife, it gets me off to a nice running start and doesn't keep me awake at night.

      After that, it's just herb tea or slivovitza. Once in a while a Yoohoo and Jagermeister over crushed ice, because the elk blood is good for my gout.

      --
      You are welcome on my lawn.
    4. Re:Simpler method by ackthpt · · Score: 1

      I've had caffeine problems in the past and am now rolling back to Green Tea. Just enough of a prod. The problem with Coffee is it's a big hit and the subsequent sips provide a declining return on alertness, but an increase in fidgeting, anxiety, etc. A more modest dose from tea and I'm less likely to become accustomed to high levels of caffeine which only serve to keep me at a body-acclimated "normal".

      Coffee is great in small doses. The huge mugs that Americans favor and the super mega vente that most people buy at the coffee shop is way overkill. I found that coffee was making me edgy until a friend from Europe gave me a set of very nice small cups, maybe six ounces. If I have one of those in the morning, sitting on my back porch with the wife, it gets me off to a nice running start and doesn't keep me awake at night.

      After that, it's just herb tea or slivovitza. Once in a while a Yoohoo and Jagermeister over crushed ice, because the elk blood is good for my gout.

      This is the case - your first hit of coffee has more impact than any more you drink all day - rate of declining return - as your body acclimates to it and your cognitive self also makes subtle adjustments. Star*ucks is far too strong and I only get on gift cards when traveling, in the smallest cup size - even that will last more than one day.

      --

      A feeling of having made the same mistake before: Deja Foobar
    5. Re:Simpler method by arth1 · · Score: 4, Informative

      The huge mugs that Americans favor and the super mega vente that most people buy at the coffee shop is way overkill. I found that coffee was making me edgy until a friend from Europe gave me a set of very nice small cups, maybe six ounces

      Keep in mind that Europeans drink stronger coffee than Americans.
      The recommended dosage for "ideal" coffee is 65-75 grams per liter in the US, and 75-90 grams per liter in Northern Europe.
      Add that most Americans prefer their coffee weaker than recommended[*] - one scoop per cup is common, which translates to 4 scoops per quart, whereas in e.g. Norway, the recommendation is seven scoops per liter, plus "one for the kettle", or about 8 scoops per quart.

      So chances are that your European friends get as much if not more caffeine from one small cup of coffee than what you'd get from a large 20 oz Starbucks.

      [*] In part, I believe, because Americans drink more central and South American coffee high in organic acids, while Europeans drink more African coffee, higher in inorganic acids. With American roasts also being lighter and thus more acidic, it helps explain why the coffee is brewed weaker - few people would like to drink sour coffee. In comparison, a typical European coffee would taste less acidic but more bitter.

    6. Re:Simpler method by Skuld-Chan · · Score: 1

      Green tea is great, until you realize that it has about as much caffeine as some coffee.

    7. Re:Simpler method by vikisonline · · Score: 1

      That should depend on your type of tea. Some tea's like the lemon ones I can't have without sugar or its too bitter. Other ones like chai, I could not imagine drinking it with sugar ( but that depends on the brand too. The tim hortons ones are good with 2 bags and let it soak till its dark ).

      But just experiment around. I'm sure you'll find a tea you like without any additives.

    8. Re:Simpler method by azalin · · Score: 1

      And while coffee does give you a good strong strong kick it goes downhill after that. Tea on the other hand pushes more gentle but doesn't stop so quickly.

    9. Re:Simpler method by dixonpete · · Score: 2

      www.caffeineweb.com I was on Lithium for a supposed bipolar condition when the problem was a caffeine sensitivity. A big waste of a quarter century.

    10. Re:Simpler method by blackest_k · · Score: 1

      http://www.snopes.com/business/secret/jagermeister.asp

      The Elk Blood is a myth. Jagermeister is a really nice drink, certainly one to try , it has a cult following round here.

    11. Re:Simpler method by agentgonzo · · Score: 1

      I appreciate what they're trying to do, but really, each person has their own caffeine profile and has to find where it works and where it doesn't.

      Very true. Whilst they can probably accurately model the caffeine absorption into the bloodstream, there are two factors that the app cannot know.

      1. Amount of caffeine per coffee. Whilst this is predictable with instant coffee, different coffee beans differ in the amount of caffeine in them. Percolators are not bad but if you drink espresso based drinks then the amount of caffeine per shot can vary by a factor of 8 (fineness of the grind, tamping, how the shot is pulled etc).
      2. Each person metabolises caffeine at a different rate. Young people and teenagers can take up to 72 hours to metabolise caffeine whereas adults can do it in anywhere between (about) 2-3 hours and 10 hours. This is why some people can't get a decent night's sleep if they have a coffee after about lunchtime, whereas some are fine.

      I like the idea of this app (for kicks) but without those two factors it's not going to be very accurate

    12. Re:Simpler method by dunkelfalke · · Score: 1

      Green teas differ very much. Gyokuro can give you instant jiggles while lower grade sencha or gunpowder can be at almost decaf levels.

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    13. Re:Simpler method by Golden_Rider · · Score: 1

      http://www.snopes.com/business/secret/jagermeister.asp

      The Elk Blood is a myth. Jagermeister is a really nice drink, certainly one to try , it has a cult following round here.

      Yup, "elk blood in Jägermeister" is a stupid myth, especially because there are no elks here in Germany :-)

    14. Re:Simpler method by cmdr_tofu · · Score: 1

      How is tea a PITA? I just take a cup, drop two Ridgways organic Earl Grey teabags add water and pop it in the microwave. My problem with coffee is I tend to drink the whole pot, but with tea, I brew 1 cup at a time, so I can have that morning cup without being tempted to drink more because "there is more in the pot going to waste"

    15. Re:Simpler method by Anonymous Coward · · Score: 0

      65 grams per litre will kill you. The LD50 is about 20 grams. OTOH, I'm drinking a Relentless here containing 160mg, so 90mg per litre sounds like some weak-ass coffee if you're only drinking 1/3 litre at a time.

    16. Re:Simpler method by PopeRatzo · · Score: 1

      The Elk Blood is a myth.

      You don't say, Amazing Randi.

      I was joking. I thought the Yoohoo would give it away. Maybe I should have added an olive to make it more obvious.

      --
      You are welcome on my lawn.
    17. Re:Simpler method by fostware · · Score: 1

      If you've been introduced to slivovitz, surely you've also been shown the first part of breakfast - turkish coffee...

      "Breakfast of Champions!"

      --
      "We know what happens to people who stay in the middle of the road. They get run over." - Aneurin Bevan
    18. Re:Simpler method by arth1 · · Score: 2

      65 grams per litre will kill you. The LD50 is about 20 grams.

      Did you by any chance design any Mars probes?

      65 grams of caffeine might kill you. If you weigh 3 kg.
      65 grams of coffee is unlikely to, unless you have an allergic reaction.

    19. Re:Simpler method by ergean · · Score: 2

      How on earth is six ounces small for a coffee?

      I usually drink one short espresso (one ounce cup) on my way to whatever takes me on the road.

    20. Re:Simpler method by CSMoran · · Score: 1

      Moreover, the fact whether one smokes cigarettes or is on birth control has a significant impact on the rate of metabolism of caffeine. Interestingly, grapefruit juice also affects caffeine metabolism (by inhibiting CYP3A4) I bet the app doesn't take this into account.

      --
      Every end has half a stick.
    21. Re:Simpler method by PopeRatzo · · Score: 1

      If you've been introduced to slivovitz, surely you've also been shown the first part of breakfast - turkish coffee...

      My Belgrade-born wife calls it "Serbian coffee" but it's the same stuff. Boiled coffee you can practically chew.

      She makes it for me when she wants the house painted.

      --
      You are welcome on my lawn.
  6. Too many missing pieces by rebelwarlock · · Score: 5, Informative

    Does it come with testing hardware so that it can determine precisely how strong your coffee is, and thus more accurately calculate your intake? Does it come with measuring tools to know how much you're pouring into your mug? How about accountability for the additional influence of sugar? What about people who have become desensitized to caffeine? There are too many factors they haven't considered, not least of which being how they're going to convince me to jam a needle in my liver so they can determine how well it's working.

    1. Re:Too many missing pieces by Sheek88 · · Score: 3, Insightful

      I agree that there are way too many variables to make a 'one size fits all' app. However, the issue of different tolerance levels was addressed in the last line of the post: "It also lets you change the 'optimal' and 'sleep' values if you're particularly resistant or weak to caffeine."

    2. Re:Too many missing pieces by arth1 · · Score: 4, Interesting

      I agree that there are way too many variables to make a 'one size fits all' app. However, the issue of different tolerance levels was addressed in the last line of the post: "It also lets you change the 'optimal' and 'sleep' values if you're particularly resistant or weak to caffeine."

      Does it allow for those of us who needs coffee to sleep?

      I grew up in a culture where 7 cups a day was average, which, when accounting for those who don't drink coffee, meant 10-12 cups a day for coffee drinkers. Often including a bedside mug. Then I moved to the US, where people have a belief that coffee can make them unable to sleep, and that's when drinking making-love-in-a-canoe coffee. I think it's at least partially psychosomatic - people get restless from coffee because they expect to, and because it's a pick-me-up in the morning, they believe it's also going to wake them up if drunk at night.
      Sure, caffeine is a stimulant, but American coffee has extremely low doses. The theobromine in a cup or bar of chocolate is more of a stimulant (never mind the sugar), and they don't seem to have the same belief about chocolate keeping them awake.

      Sure, I have probably built up a tolerance, but I didn't have any problem with coffee keeping me awake when I started drinking it either. About a pot of strong coffee a day during summer at age 14, and I slept like a log. Nobody told me I would have problems sleeping, so I didn't.

    3. Re:Too many missing pieces by hcs_$reboot · · Score: 1

      Just by drinking a coffee with an empty stomach, or after a big meal, changes completely the caffeine effects. It is better to rely on one's own feelings, and learn day by day how one's own body reacts upon taking a specific coffee at this time, after lunch, after doing some sports etc...

      --
      Slashdot, fix the reply notifications... You won't get away with it...
    4. Re:Too many missing pieces by Colourspace · · Score: 1

      Yes. similarly, I have 5-10 cups of tea a day (Brit here - what ho!). It's not caffeine that keeps me awake. Nothing keeps me awake (other than class 'A's). Horses for courses, YMMV, my 2p etc etc..

    5. Re:Too many missing pieces by Anonymous Coward · · Score: 0

      The old lady keeps me up. But what can one do?
      Close my eyes and think of England.

    6. Re:Too many missing pieces by Anonymous Coward · · Score: 0

      Sugar isn't a stimulant. It is just calories. So, what additional influence does sugar have?

    7. Re:Too many missing pieces by arth1 · · Score: 2

      Sugar isn't a stimulant.

      Thus speaks someone not a parent.

    8. Re:Too many missing pieces by The_mad_linguist · · Score: 4, Informative

      http://www.straightdope.com/columns/read/2747/does-giving-sweets-to-kids-produce-a-sugar-rush

      There are a couple of other tests they don't mention, but it's pretty well established that sugar doesn't make kids hyper. The excitement from having something sweet and tasty might do that, but even that seem to be pretty psychosomatic on the parents' part.

    9. Re:Too many missing pieces by nprz · · Score: 1

      I didn't drink coffee until I finished college and started working. From middle school up until that time, I drank soda. I had my part-time job at a place giving out free soda, so I probably drank a gallon a day.
      Now that I'm on coffee, I have at least 6 cups a day to feel normal. Drinking it before going to sleep has no affect.

      Worrying about work and what-not would keep me awake, so I usually try to note down any brilliant ideas when lying in bed and that usually helps.

      I used to think the soda kept me up at night, but it really is just the computer (and its addiction).

    10. Re:Too many missing pieces by voidphoenix · · Score: 1

      Except actual experience with kids will demonstrate otherwise. My opinion of the matter is based on observing my niece and nephew, both when they and their parents were living apart from me and after they moved in with us. We had no expectations, neither I nor my siblings had sugar/hyperactivity problems when we were kids. But my sister's kids both react to sugar, albeit with noticeably different tolerances. The boy (7) is affected by lower doses of sugar than the girl (6), but both will exhibit startlingly different patterns of activity after a big jolt of sugar. My nephew apparently feels it, and will often start jogging back and forth to bleed off the excess energy, because he just can't sit still when it happens. Here's the kicker: the boy is so sensitive that he gets hyperactive if he has a big rice meal (rice is a staple in many parts of Asia). Please note that non-fiber carbohydrates (sugar and starch) you ingest break down and are absorbed more or less directly into blood sugar.

      The bottom line is that different people will have different responses to different chemicals, and sugar can and does have an effect. On the plus side, these two kids are pretty smart and now police their own sugar intake. They take smaller servings of sweets and avoid them from late afternoon onward.

    11. Re:Too many missing pieces by OrigamiMarie · · Score: 1

      Caffeine is definitely not psychosomatic for me. I got sleeping problems from a caffeinated soda one time when I was a kid, before I knew what it was supposed to do to me.

    12. Re:Too many missing pieces by Hadlock · · Score: 1

      A standard cup of coffee/tea is about 100-110mg. Being a crop it can vary 10-15% in either direction from lot to lot, even the same brand/flavor. BMI has loopholes too (like body builders), but for many young people just entering the workplace, that giant pot of free coffee is enticing and this could really help a lot of people become more aware of how strong drugs like caffeine effect your body. Sure, you'd be better off with blood tests and a full suite of diagnostics, but like the food pyramid, I don't think many people disagree that refined sugars should be consumed the least.

      --
      moox. for a new generation.
    13. Re:Too many missing pieces by Hadlock · · Score: 1

      it's pretty well established that sugar doesn't make kids hyper

      I am speechless. Have you never had soda/juice/breakfast cereal? Maybe you misspoke, what you meant to say was "sugar doesn't make kids any more hyper than it does adults", which is to say, a lot. I eagerly await your reply where you tell me how sugar doesn't effect you in the slightest.

      --
      moox. for a new generation.
    14. Re:Too many missing pieces by Anonymous Coward · · Score: 0

      Good point!
      I live now in The Netherlands and the coffee I drink at work is considerably weaker than what I was used to back in Portugal, to the point of drinking quadruple, both in frequency and amount (2 times more often and double expressos) than what I used to when I was in Portugal. This isn't something of getting used to as I do get a Portuguese brand for home and then I get the same jolt as I used to.
      In the end it took me a bit to get used to this and have a complete different routine.
      By the way, we had a few different brands so far at work and all of them seemed quite week and similar in terms of amount of cafeine in them.

    15. Re:Too many missing pieces by Surt · · Score: 2

      You might want to find out if the boy has diabetes. And soon, it could kill him.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    16. Re:Too many missing pieces by Anonymous Coward · · Score: 0

      dexedrine (Or any other reasonable quality amphetamine) will keep you awake if you take it close to when you want to sleep. (And it is a class B).
      Think there are a few other class B's that will keep you awake as well. (e.g ritalin).

    17. Re:Too many missing pieces by The_mad_linguist · · Score: 1

      The plural of 'anecdote' is not data.

      Please direct me to any controlled studies that back up your point.

  7. Unfortunately it got bad ratings by wisebabo · · Score: 1

    According to App store reviews the current version is buggy (it crashes a lot).

    Still I got it because it's FREE (well the lite version is) and it will hopefully be upgraded to fix its bugs. Since I drink coffee for my health (many studies have shown it to help prevent colon, liver and prostate cancers and other diseases as well as enhance athletic performance) I'd really like to keep track of consumption.

    1. Re:Unfortunately it got bad ratings by Imagix · · Score: 1

      It does. Tried to change the "sleep time" and kaboom. Not even something weird, just changing a normal setting.

    2. Re:Unfortunately it got bad ratings by jockeys · · Score: 1

      it's unusable. attempting to enter anything other than coffee or tea (no soda, really?) causes the app to crash on my unjailbroken phone.

      --

      In Soviet Russia jokes are formulaic and decidedly non-humorous.
  8. Here's the prototype for my app by Anonymous Coward · · Score: 2, Funny

    for(;;)
      { time_to_drink_coffee(); }

  9. I don't need an app for that. by Freddybear · · Score: 1

    Excuse me, I need another double espresso to make it to bedtime. O_o

  10. Only poorly rated Lite version is free by WiiVault · · Score: 1

    Subject says it all. Just an FYI.

  11. I don't need software to tell me how much caffeine by epp_b · · Score: 2, Insightful

    I've already optimized my intake: it's 0.

    Honestly, why do people addict themselves to this crap? Stop eating McCrappers all the time, get some exercise and you might be surprised how much energy you have without caffeine. You'll feel a lot better, too, not being buzzed and strung out all the time.

  12. Error Rate by mikehilly · · Score: 1
    Careful, it might keep you up all night until they work out the bugs!

    Medium Coffee at 7am

    App Check >> DRINK MORE COFFEE!

    Medium Coffee at 8am

    App Check >> DRINK MORE COFFEE!

    Medium Coffee at 9am

    App Check >> DRINK MORE COFFEE!

    Large Coffee at 10am

    App Check >> DRINK MORE COFFEE!

    Take HUGE Piss

    Giant Coffee at 11am

    App Check >> DRINK MORE COFFEE!

    Giant Coffee at 12pm

    App Check >> DRINK MORE COFFEE!

    Another HUGE Piss, skip lunch

    Full pot of Coffee at 1pm

    App CHECK >> DRINK MORE COFFEE!

    Go into coffee induced mild coma at 2pm

    1. Re:Error Rate by arth1 · · Score: 1

      Go into coffee induced mild coma at 2pm

      After just 7 cups? Hardly. That's about the average coffee consumption in Scandinavian countries, when the average includes those who don't drink coffee at all.

      It's just coffee - it's not like you're downing wellbutrin or ritalin.

      It's not as bad a drug as you might think - disregard "studies" done or sponsored by Loma Linda (adventists) or BYU (mormons) who have a religious agenda against coffee, and you'll find little to indicate that it's all that bad for you in moderation.

    2. Re:Error Rate by Anonymous Coward · · Score: 0

      a cup of coffee in the states is usually about 2-1/2 cups of coffee from respectable european countries. the coffee isn't usually as nice either. -S

  13. Re:I don't need software to tell me how much caffe by jeff.j.jeff · · Score: 1

    It tastes so good, that's why i'm addicted. I'm constantly on and off coffee. I hate the caffeine but love the taste. I'm on decaf now but it tastes bad. What I don't get is people who need to add cream & sugar. Why not just drink soda at that point?

  14. Re:I don't need software to tell me how much caffe by ColdWetDog · · Score: 0

    Ssssshhhutttttt uppppp, youuuu faggggottttttttt. Cofffffeeeeeeeeee isssss perrrfecccctttlyyyy saffffffeeeeee. Hhhheeeeeeelllllpppsssssss witttthhh conconconcennntrationnn and typping.

    What?

    --
    Faster! Faster! Faster would be better!
  15. I need caffeine by jsse · · Score: 1

    when there is too much blood in my vein.

  16. Don't drink coffee by utkonos · · Score: 2

    I've never drank coffee on a regular basis. I've drank maybe under 100 cups of coffee total in my entire life. I've never had a problem with drowsiness or alertness. I get a good amount of sleep at night and decent exercise. This is all you need.

    1. Re:Don't drink coffee by WiiVault · · Score: 2

      I would argue the majority of people drink coffee and tea for the taste and caffeine is just part of the deal or a perk for some. There are just so many better ways to get jacked-up on caffeine if that is the sole goal. I too don't drink coffee, but love a nice Earl Grey every now and then.

  17. Re:I don't need software to tell me how much caffe by WiiVault · · Score: 2

    A big difference is that caffeine is naturally occurring in lots of plants and not a major health negative especially as far as stimulants go. On the other hand only my kids believe that there is a McNugget tree in the wild despite my best efforts to avoid that shit.

  18. Re:Caffeine by InspectorGadget1964 · · Score: 1

    Hey! This article says caffeine, not cocaine

  19. Re:Caffeine by MrEricSir · · Score: 4, Funny

    Which is worse: caffeine, or falling asleep at my desk every day until I get fired, run out of unemployment, and starve to death?

    --
    There's no -1 for "I don't get it."
  20. Re:I don't need software to tell me how much caffe by Colourspace · · Score: 1

    Don't mean to troll here but maybe decaf doesn't taste so good because as you swig, the caffeines not there to light the 'taste' up?

  21. to complicated by letherial · · Score: 2

    that's easy,

    just a screen that says

    DRINK COFFEE NOW

    there..optimized.

    the paid version adds a -beep- every three seconds to remind you to take sip

  22. Re:I don't need software to tell me how much caffe by 93+Escort+Wagon · · Score: 2

    I've already optimized my intake: it's 0.

    Honestly, why do people addict themselves to this crap? Stop eating McCrappers all the time, get some exercise and you might be surprised how much energy you have without caffeine. You'll feel a lot better, too, not being buzzed and strung out all the time.

    You sound really irritated and snappish - a cup of coffee might help soothe your nerves.

    --
    #DeleteChrome
  23. Re:I don't need software to tell me how much caffe by Osgeld · · Score: 1

    I could not stomach the taste of coffee for years, it would make me gag ... one day I tried some decent stuff black, and now I have no problem with it, though I still rarely drink it

  24. Re:I don't need software to tell me how much caffe by Z34107 · · Score: 1

    I wouldn't think so - caffeine by itself has a rather bitter taste. Energy drinks add tons of other crap as much for marketing as to work around it.

    --
    DATABASE WOW WOW
  25. Brave New World: The Prequel by Anonymous Coward · · Score: 0

    Jesus people. I know it's the nerd way, but can't I get a hit of my drug, the one drug the Feds haven't tried to outlaw, without worrying if I'm doing it in the properly determined scientific manner? I know, I sound like a total artsy type right now, but with the increasing prevalence of articles telling me to worry about doing everything "optimally", even my relaxation habits, I can't help but wonder if the soma and the orgies are that far off.

  26. Optimize away all your brain functionality... by Anonymous Coward · · Score: 0

    with an app

  27. Isn't it better to avoid drinking coffee? by Anonymous Coward · · Score: 2, Interesting

    Caffeine is a drug that's sadly overused to the max. Surely, the best thing must be to avoid taking caffeine at all? It's really mind boggling how our culture nurtures it to the point that they now talk about "optimum caffeine level" in your blood. Wow, just..wow.

  28. Re:I don't need software to tell me how much caffe by Anonymous Coward · · Score: 3, Informative

    No, it's because decaf inherently tastes bad.

    Basically, when making coffee, the idea is to extract some chemicals from the coffee beans using hot water. Those chemicals are volatile organic compounds, for the most part. If you leave a coffee bean exposed to the air for a while (or a ground coffee bean exposed to the air for an hour), most of those chemicals will evaporate. The resulting coffee would taste terrible - much of what makes it taste like coffee would have evaporated.

    Something similar happens with decaf. You have to try to extract the caffeine, without extracting the other compounds that make it taste like coffee. That's really difficult, because any process you might use to extract caffeine will extract other chemicals as well. Much of what makes it taste like coffee would be lost - you can take some decent coffee, decaffeinate it, and it'll end up tasting bad.

    You can work around that by using much higher quality coffee beans - you take coffee that would taste really good, and it'd end up tasting OK. The problem with that is economics.

    It turns out that people aren't willing to pay any extra for decaf compared to regular coffee. Since the decaffeination process itself adds cost, the only way to sell decaf for the same price as regular coffee is to use lower quality (cheaper) coffee beans. So now you're taking bad coffee, and making it worse. Aside from which, if you're producing coffee beans, why would you take the best you have and ruin it, when you could sell it as-is for a much higher price?

    It is possible to have decaf coffee that doesn't taste like crap. It's just difficult.

  29. This app brought to you by Starbucks... by BenJCarter · · Score: 2
    How to fine tune your caffeine dosage. So what's wrong with that? I hope that sells and they make lots of money. Then I hope I can buy stock in their corporation just at the right time, and get rich too.

    I love America. It's full of Americans that sell shit I choose to buy. So much better than the alternatives...

    --
    For in politics, as in religion, it is equally absurd to aim at making proselytes by fire and sword. - Publius
  30. Re:I don't need software to tell me how much caffe by dead_cthulhu · · Score: 2

    It's actually in the roasting and processes used to make decaf. For one thing, it's almost universally roasted so dark that it's basically burnt, and becomes extremely bitter. The lighter and medium roasts that have the more mellow flavours actually have the highest caffeine content.

  31. Re:Caffeine by G3ckoG33k · · Score: 0

    Have you heard of the word effeciency, and unconventional!

    Swedish watches:
    http://www.arlanch.se/
    http://www.sjoosandstrom.se/
    http://mutewatch.com/
    http://www.watcheroo.com/swedish-watches.php

    Swiss cars
    http://www.smart.com/

    Boing! That coffee hit me hard!

  32. Re:Caffeine by Anonymous Coward · · Score: 0

    If that's the case then you obviously have a drug addiction and might want to consider getting it under control. Your body gets quickly accustomed to the caffeine, so you'll need more and more just to get to a "normal" level. If you can't stay awake without it then using your holidays for a detox might be one of the best things you've done for yourself in a long time. Trust me, I've been there!

  33. Alcohol by Anonymous Coward · · Score: 0

    You could just have a glass of wine at night if you want to take the edge off the caffeine.

    1. Re:Alcohol by KingAlanI · · Score: 1

      no wonder vodka and red bull is so popular. (or rum and coke)
      I often alternate between separate alcohol and caffeine beverages for a similar effect

      --
      I listen to both RIAA and non-RIAA stuff if I like the music, tangential business/politics nonwithstanding.
    2. Re:Alcohol by Hadlock · · Score: 2

      Reportedly commercial cigarettes have sugar added to them [[citation needed]] which interacts with some of the other additives + nicotine in the tabacco to improve it's stimulating effects.
       
      In Peru they make a really tasty margarita-tasting thing made with ice, vodka and coca leaves (the same species they extract Cocaine and Novocaine from - the leaves are legal and widely available in most of South America) which leaves you up all night and full of energy, which is good because the bars in the touristy areas never fully close.

      --
      moox. for a new generation.
  34. Re:I don't need software to tell me how much caffe by ceoyoyo · · Score: 2

    Caffeine is naturally occurring in lots of plants as an insecticide.

  35. Probably Useless by Anonymous Coward · · Score: 0

    Half life clearance of Caffeine from the body can vary from 1.5 to 9.5 hours and is influenced by things like what medication you are on, the health of your liver, if you smoke, are on the pill... and so on.

  36. No by Grindalf · · Score: 0

    No, I mark this idea "wrong." Go back to med class!

    --
    The purpose of existence is to make money.
  37. Re:I don't need software to tell me how much caffe by Anonymous Coward · · Score: 0

    I was a twice daily autodrip coffee drinker, cup in the morning, cup or 2 in the afternoon when one tends to the the dowsies at a dull day job. 2 years ago I made an effort to stop drinking coffee. I didn't think myself a heavy coffee drinker, but it was that afternoon problem of getting drowsy... it was getting worse and I'd need more and stronger coffee. I was successful without much effort. I quit, and ate fruit instead, and the drowsy afternoon problem went away; I found myself alert in the afternoons. A few months later, after having no coffee whatsoever, I was given a coffee gift card... and within a few visits became addicted to esspresso... and since have spent a depressing amount on coffee. And I have tried to quit... and its really difficult. I need 6 or so shots a day just to hold it together.

  38. Re:I don't need software to tell me how much caffe by WiiVault · · Score: 2

    Fair, but chocolate is toxic to dogs. Yet to me it is yummy as hell, and some argue has positive health properties in moderation. Humans and insects are quite different by most measures.

  39. coloful phrasing by KingAlanI · · Score: 5, Insightful

    making-love-in-a-canoe coffee.

    Hey, I thought that comment ("fucking close to water") applied to our beer, not our coffee. :P

    --
    I listen to both RIAA and non-RIAA stuff if I like the music, tangential business/politics nonwithstanding.
    1. Re:coloful phrasing by azalin · · Score: 1

      The main reason Starbucks an the like flourished and hot this big, was that the ordinary coffee available in the US sucked (to put it mildly). Microbreweries seem work through a similar avenue.

    2. Re:coloful phrasing by cusco · · Score: 1

      Had a friend who went to college with Howard Shultz, CEO of Starbucks during its rise. A bunch of them were sitting in a boat on Puget Sound, getting stoned and talking about what they were going to do after graduation. Howard said, "I want to find a legal, addictive drug and market it to the world." Truly a man with a plan.

      --
      "Think about how stupid the average person is. Now, realise that half of them are dumber than that." - George Carlin
  40. Is there a version of this app... by Hermanas · · Score: 4, Funny

    ...that can keep me at the Ballmer peak? Now THAT would be useful.

  41. I optomised drinking coffee in 2010. by AbRASiON · · Score: 1

    I drank my last one then and haven't touched it since. I know some people it's ok for, however like most drugs they affect people in different ways.

    Some drinkers get merry, happy and have a good time, others want to beat people up.
    Coffee makes me an addict, takes my energy away, wrecks my sleeping patterns and is generally not a good thing to go near.

    I have weak jasmine tea now, awesome drink, much better - can sip at it all day from a thermos as if I'm in a Vietnamese resteraunt.

  42. Next up: coffee + biorhythms by petes_PoV · · Score: 1

    Yes, you're absolutely right - there is no possibility that this app can/should be taken seriously. That it's being promoted as developed by 2 doctors is a more worrying issue (or would be, if I cared), as the more credulous members of society, with no self-control, will make the basic error of believing what it tells them.

    In practice it's just a bit of silliness for people who feel the need to justify the amount of coffee they drink. Hopefully the next version will link coffee intake with biorhythms - so we can see exactly how much credibility to give it.

    --
    politicians are like babies' nappies: they should both be changed regularly and for the same reasons
  43. It might but you aren't alone by F69631 · · Score: 1

    I don't know where the GP is from but I could make a wild guess that it's one of the Nordic countries (Finland, Sweden, etc.) because of this list of countries by coffee consumption per capita.

    I keep hearing that American beer is too light and I have no reason to doubt that but let me assure you that Nordic beer is also crap. The local term is "Poronkusi", which translates to something like "Reindeer piss". (Of course, some microbreweries are exception but I'd guess that there are quite decent microbreweries in USA too).

    1. Re:It might but you aren't alone by Anonymous Coward · · Score: 0

      finland is not nordic; it is scandinavian.

    2. Re:It might but you aren't alone by Anonymous Coward · · Score: 0

      Actually "nordic" would be even more accurate. Scandinavia does not technically include Iceland and Finland. Though even that is a "Linux is not Unix" kind of statement. If it quacks like a duck, and so on.

    3. Re:It might but you aren't alone by Kharny · · Score: 1

      wrong, finland is nordic, but not scandinavian

      --
      Make a man a fire and he will be warm for a day, set a man on fire and he will be warm for the rest of his life
    4. Re:It might but you aren't alone by KingAlanI · · Score: 1

      yeah, there are a bunch of decent microbreweries (and places that are large but not as large as Bud/Coors/Miller)
      I don't doubt that other countries have their share of bad beer.

      various other comments in this thread do mention those countries being big on consumption of strong coffee

      --
      I listen to both RIAA and non-RIAA stuff if I like the music, tangential business/politics nonwithstanding.
  44. Re:Caffeine by Anonymous Coward · · Score: 0

    But Swiss watches are functional, and Swedish cars are boring.

    What's going on?!

  45. Re:I don't need software to tell me how much caffe by Anonymous Coward · · Score: 0

    Awful stuff.
    Tastes good, though.

  46. Only way to "optimise" your coffee intake? by zedrdave · · Score: 1

    Don't drink it regularly... (note that I did not say "don't drink it EVER... it will kill ya... coffee's bad" etc. etc.)

    It's not witchcraft, people: coffee is a drug (a reasonably mild one at that), like many drugs your body builds a tolerance to it real fast. The more you drink it, the less effective it is, up until the point where your hourly cup barely keeps you at baseline wakefulness (kinda like crack, really, but much cheaper). I could quote you a gazilion studies on that, but I'm pretty sure you already have that one coworker whose 12 cups/day diet does not make particularly on edge (but who gets the shake if they go without caffeine for a couple days).

    Restrain yourself, only drink coffee (in small dosage) when you particularly need the alertness or wakefulness, and you will be making optimal use of it (at minimal cost on your kidneys).

    And if 24/7 "optimal mental alertness" is what you are really after, then why do half-measure: just skip to amphetamines directly.

    1. Re:Only way to "optimise" your coffee intake? by Anonymous Coward · · Score: 0

      Don't drink it regularly... (note that I did not say "don't drink it EVER... it will kill ya... coffee's bad" etc. etc.)

      It's not witchcraft, people: coffee is a drug (a reasonably mild one at that), like many drugs your body builds a tolerance to it real fast. The more you drink it, the less effective it is, up until the point where your hourly cup barely keeps you at baseline wakefulness (kinda like crack, really, but much cheaper). I could quote you a gazilion studies on that, but I'm pretty sure you already have that one coworker whose 12 cups/day diet does not make particularly on edge (but who gets the shake if they go without caffeine for a couple days).

      Restrain yourself, only drink coffee (in small dosage) when you particularly need the alertness or wakefulness, and you will be making optimal use of it (at minimal cost on your kidneys).

      And if 24/7 "optimal mental alertness" is what you are really after, then why do half-measure: just skip to amphetamines directly.

      We would but amphetamines are illegal to buy in the shops.

      I'm not shitting you. I would take them if it meant I was capable of doing more in one day than I currently do in a week.

  47. useful science fact by Anonymous Coward · · Score: 0

    interesting informative and the first truly useful discovery since teflon!

  48. Re:Caffeine by Anonymous Coward · · Score: 2, Insightful

    Yeah, Koenigsegg Automotive AB makes really boring cars.

    And for everyones information coffee contains a lot of antioxidats and other good stuff.

  49. Europeans? by zarlino · · Score: 1

    Keep in mind that Europeans drink stronger coffee than Americans.

    Believe me, you just can't group Europeans like that. I'm Italian. I simply cannot drink what they call coffee in any northern country. Spaniards, Greeks and Turkish have interesting ways of preparing coffee too. Northern countries are very similar to Americans in their coffee habits.

    --
    Check out my cross-platform apps
    1. Re:Europeans? by arth1 · · Score: 1

      I'm Italian. I simply cannot drink what they call coffee in any northern country. [...] Northern countries are very similar to Americans in their coffee habits.

      And Italians are very similar to Americans in how little they know about the world outside their borders, lumping countries together.

      Brits drink weaker coffee, but they are not representative for Northern Europe.
      In Norway, people drink stronger coffee than in Italy, which in turn is stronger than American coffee. What Norwegians don't drink much of are the caffeine weak but strong tasting espresso and cappucino based coffees. I've lived in all three countries; I should know.

  50. Re:Caffeine by Henour · · Score: 1

    If you are falling asleep then you should try to cure the reason and not treat the Symptoms.
    Caffeine is great for a temporary boost but its not a cure for being tired if you only sleep two Hours a day.

    I stopped consuming Caffeeine products two weeks ago and on average I feel more awake now then when I was emptying Energy Drink like there is no tomorrow!
    Especially getting out of Bed got a lot easier!

  51. Re:Caffeine by MLease · · Score: 1

    Mitt? Is that you?!?

    --
    I'm sorry; I don't know what I was thinking!
  52. Re:Caffeine by Anonymous Coward · · Score: 0

    The good thing about antioxidants is that they reduce the free radicals in your system, which have been hypothesized to be linked to cellular damage. Although, after almost twenty years of research, there is still no clear evidence of this.

    The bad thing about antioxidants is that they reduce the free radicals in your system, which have been repeatedly shown to be critical for fighting off bacterial disease.

  53. Re:Caffeine by Niedi · · Score: 2

    But somehow reduction of caffeine seems to severely lower the ability of many people to spot a joke. Even when it's striding towards them in a pink motorbike suit yodeling a novel esperanto interpretation of the national anthem of Kazakhstan.

  54. Not free by Anonymous Coward · · Score: 0

    listed as $1.

    1. Re:Not free by PlatyPaul · · Score: 1

      There's a "lite" version (also v2).

      --
      Misery loves company. Online misery loves unsuspecting random strangers.
  55. Re:Caffeine by EricWright · · Score: 2

    You must not be American ... we don't get extended holidays to wean ourselves from caffeine. My longest work break in 12+ years of IT has been 12 days that I spent between London and Paris. Getting 8 straight vacation days took quite a bit of negotiation.

  56. Re:I don't need software to tell me how much caffe by EricWright · · Score: 1

    It turns out that people aren't willing to pay any extra for decaf compared to regular coffee. Since the decaffeination process itself adds cost, the only way to sell decaf for the same price as regular coffee is to use lower quality (cheaper) coffee beans. So now you're taking bad coffee, and making it worse. Aside from which, if you're producing coffee beans, why would you take the best you have and ruin it, when you could sell it as-is for a much higher price?

    This is the exact reason I've heard from many different sources. If you were willing to pay 50% extra for decaf, then you could have primo beans, no caffeine and good-tasting coffee. Most people won't pay the extra, thus most decaf tastes like crap.

  57. Le Café by aurelianito · · Score: 1

    Cute french animation regarding the subject of the article: http://www.youtube.com/watch?v=4sILvmyNGAI

  58. Re:Caffeine by morgauxo · · Score: 1

    Yay, kidney stones!

  59. Re:Caffeine by SacredNaCl · · Score: 1

    I'm actually inclined to agree with the anonymous "troll". My beloved is a counselor, and simply taking people off of caffeine for 8 weeks is enough to eliminate many cases of: severe anxiety & panic disorders, psychotic episodes, memory problems, some cases of depression, and sometimes even symptoms that mimic personality disorders. High caffeine intake also tends to make chronic pain worse as the user feels tense, stressed out, and high doses often lower the ability to cope with stress.

    The character "Tweak" from South Park isn't too far from the truth in a great many cases. Caffeine does not do kind things to the brain, or for your blood pressure with high dose chronic use.

    I still love having a couple cups of tea, but since I started abstaining from coffee I am a ton less stressed out than when I was consuming 1-2 16oz QuikTrip coffees a day. The little bit of lift caffeine gives tends to largely disappear with chronic use, but the negative aspects of high caffeine intake remain.

     

    --
    Freedom is merely privilege extended unless enjoyed by one and all.
  60. Don't panic by Anonymous Coward · · Score: 0
  61. Re:I don't need software to tell me how much caffe by ceoyoyo · · Score: 1

    My point was that "[it's] naturally occurring in lots of plants" is completely irrelevant to how safe or beneficial something is. Caffeine is toxic to humans, we just don't normally approach potentially fatal doses. Theobromine, the caffeine relative in chocolate, is also toxic. Caffeine, for example, is about 1/3 as toxic as antifreeze, and about half as toxic as the organophosphate pesticide diazinon.

    It's tough to kill yourself drinking coffee, but you certainly can with more concentrated caffeine sources (and people have). People have also died from eating too much chocolate.

    Not that drinking coffee in moderation is necessarily bad for you (I drink it), but the "it's natural!" thing is annoying. You're drinking pesticide.

  62. Re:I don't need software to tell me how much caffe by ceoyoyo · · Score: 1

    Whoops, caffeine is 3 times more toxic than antifreeze, not 1/3 as toxic.

  63. Nothing New by assertation · · Score: 2

    Asians figured this out centuries ago.

    The drink green tea, getting a health boost with their caffeine, instead of the bone rotting chemicals in soda.

    The drink it hot so they don't guzzle it and get swamped in caffiene and they drink it out of tiny tea cups through out the day giving themselves a steady burn without a crash.

  64. Re:Caffeine by Zaatxe · · Score: 1

    I am not addicted. I can stop whenever I want.

    --
    So say we all
  65. Re:Caffeine by Anonymous Coward · · Score: 0

    ridiculous...several studies have shown a neuroprotective role for caffeine against parkinson's and multiple sclerosis.

  66. Re:Caffeine by CSMoran · · Score: 1

    Any amount of caffeine is bad for you. Stop trying to defend your addiction, you silly people.

    Could you please back this up with a citation?

    --
    Every end has half a stick.
  67. Give up caffeine. by pclminion · · Score: 2

    I gave up caffeine purely on a whim about a month ago, and I cannot express how much BETTER my life is. I'm less nervous, I fidget less, I fall asleep earlier and wake up earlier. My appetite is more regular.

    Do you have any idea how awesome it feels to fall asleep because you're sleepy (not because you know you have to), and to wake up because you've slept enough and not have to immediately start pouring more caffeine into the bloodstream just in order to function? It was a fucking miracle.

  68. Don't need app, just spreadsheet by Jeff1946 · · Score: 1

    I looked up info on caffeine. Takes about one hour to go into your system and it has about a 5 hour half life. I put this into spreadsheet and found that a simple rule is drink x amount of coffee to start the day then 1/2 x in three hours and another 1/2 x in three more hours. This will keep your caffeine level pretty constant and it will decay to about 15% of x by the time you go to sleep. There is quite a bit of variation with different people so this is only a starting point.

    1. Re:Don't need app, just spreadsheet by pclminion · · Score: 1

      I would think that because of diffusion the rate of uptake of caffeine into the bloodstream is a function of concentration, so the "one hour to go into your system" rule seems pretty crude, you would need to account for what the actual value 'x' is, and whether it's in the form of two liters of Coke vs. a quad shot espresso.

  69. Re:Android version? Sweet! by Wingfat · · Score: 0

    thanks! needed the non iOS one. and yeah dont know why this was posted on Slash dot anyways. good idea to sell to geeks, but they made it free. so i am betting a better version will be out on the iOS with in a month.

  70. How does this work? by hydrofix · · Score: 1

    Does anyone know where did they get their parameters? From which studies / white papers exactly? I for one would be thrilled to port this to some other platforms if anyone could give me some pointers to relevant studies.

  71. This app may be useful for me by deciduousness · · Score: 1

    I am pretty sensitive to caffeine, but love all kinda of loose leaf tea. I can't even drink as much green tea as I want without overstimulating myself. I just sip at it constantly until I realize that my hands are starting to sweat, this app may be useful for me to drink as much as possible, but not get too much caffeine. Decaffeinated tea is not an option, it is simply bad tea that has had the caffeine 'washed' out along with most of the good flavor.

  72. advice by Anonymous Coward · · Score: 0

    advice to the app makers:

    allow checkboxes for Single Nucleotide Polymorphism results for - fast metabolizer - slow metabolizer.

    disclaimer: I have not seen the app or read the other comments here.

    - Nazgul

  73. Re:I don't need software to tell me how much caffe by pclminion · · Score: 1

    Fair, but chocolate is toxic to dogs.

    Because it contains theobromine, which is very closely related to caffeine...