except i think "dehydration" is a bit of an exaggeration. Im sure that the refreshness/feeling better after a gulp of water is mostly psychosomatic(?) but its all good.
The benefits of drinking lots of water are usually ignored, yet this is one of the easiest nutritional habits one can acquire and actually maintain. Yellow urine = dehydration may sound exaggerated, but it is really not. This can easily be seen at high altitude; as a mountaineer, I can attest that it may already be too late, in terms of proper hydration status, when the urine is yellow. It is very difficult then to get back in proper shape and "survive" the trip. Of course, such a situation is of little consequence when in an office, but nevertheless, these seemingly lower levels of dehydration contribute to fatigue and the body generally feeling "not quite right". In the mountains, this could end deadly, because one's judgement is severely impaired (same with lack of oxygen). And so is one's judgement in an office: things take longer to accomplish, the mind starts to wander, one can't concentrate anymore. This is also not good for practicing the piano.
MTV viewers may remember Spurlock's short-lived show ''I Bet You Will,'' whose motto was ''stupidity pays.'' With cameras rolling, Spurlock paid a man to gulp down an entire 24-ounce jar of mayonnaise. He got a woman to shave her head, combine the hair with butter to form a giant hairball, and then eat it. Internet voyeurs could also see one guy chew on a piece of dog feces for Spurlock's ready cash. Not surprisingly, the show featured an ''Official Puke Bucket.''