When you don't get enough water, your body thinks you're starving. When you do any kind of healing or undergo any kind of stress, change, or growth, you are producing chemical changes in your body.
Most doctors recommend everyone drink eight eight ounce glasses of water a day.
By drinking water, you're giving your body what it needs the most. This is the very minimum amount of water your body needs. What works best for me is to continuously drink water through the day. The point is to get that water in you anyway that you can. Dehydrating agents eventually cause loss of some bodily functions.