example: one website,
http://watercure.com/
another,
http://sacred-texts.com/hin/av/av02003.htm

more interesting, is that after a while the body suppresses the thirst sensation, and sometimes you think you are hungry and you're really thirsty
The author of that book suggests that the main cause for degenerative illnesses is dehydration..
If you drink water first thing in the morning probably you will see how your intestinal problems go away plus many other benefits.
Modern science will never back something that doesn't cost anything. Patient cured, customer gone.

Servant Krsna:

Can't really drink first thing in the morning. I have to brush my teeth first, hehe

This is just a western habit, ayurvedic doctors say you can drink water first thing before brushing teeth.