Don't know if this is true...
Drinking water at a certain time maximizes its effectiveness on the body:
2 glasses of water after waking up - helps activate internal organs.
1 glass of water 30 minutes before a meal - helps digestion.
1 glass of water before taking a bath - helps lower blood pressure.
1 glass of water before going to bed - avoids stroke or heart attack.
If its true, great! If not, well... at least I'm hydrated! :)