Water is essential to good health, yet needs vary by individual
How much water should you drink each day? It’s a simple question with no easy answers. Studies have produced varying recommendations over the years, but in truth, your water needs depend on many factors, including your health, how active you are, and where you live.
Lack of water can lead to dehydration, a condition that occurs when you don’t have enough water in your body to carry out normal functions. Even mild dehydration can drain your energy and make you tired.
Every day you lose water through your breath, perspiration, urine and bowel movements. For your body to function properly, you must replenish its water supply by consuming beverages and foods that contain water.
Here is an easy way to calculate how much water you should drink:
http://nutrition.about.com/library/blwatercalculator.htm
How much water do you drink now? How much water should you be drinking ?