Drink 80 ounces of water per day...

Healthy muscle is comprised of more than 70% water.  Water is also an essential transport mechanism for a vast array of nutrients like vitamins and minerals and EVEN carbohydrates.  It serves an important role in all cellular activity.  If your water intake is low, your ability to transport nutrients becomes compromised, and you'll lose strength and feel sluggish because of the buildup of ammonia, urea, uric acid and other junk you don't want hanging around in YOUR body.

Also, if you happen to be someone who struggles with water retention, one of the best ways to get id of that is to drink more water, not less.  Water retention is just another aspect of your body's survival mechanism. 

Drinking water can also help you control your appetite.  If you find that the portions of food you're eating don't satisfy you, try drinking another cup of water with your meal.  You'll find this helps alleviate that nagging feeling of not having eaten enough.

Excerpts taken from Jan/Feb 2001 Muscle Media Magazine