Slashdot Mirror


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."

13 of 134 comments (clear)

  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.
  2. 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.....

  3. 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 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.
    2. 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.

  4. 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 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.

  5. 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."
  6. 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.

  7. 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.
  8. 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.