Standing While Working Results in Better Work?

Bamafan77 asks: "I've recently become fascinated by the idea of standing while working. I've found that I'm much more productive for longer periods of time while standing as opposed to sitting. The best way to describe it is that my brain feels more 'engaged.' Apparently, many famous people feel the same way including Thomas Wolfe, Vladimir Nabokov, and Winston Churchill. Other benefits include a better ability to control weight. (Guess what? Your slow metabolism ain't the cause for that belly). The Mayo Clinic has gone so far as to do research into a treadmill workstation. Does anyone here have experiences to share when it comes to standing while working, especially in the IT field?"