Approximately 60% of the human body is made up of water. Knowing this, it always surprises me when my clients; in the blaze of summer are walking around without a water bottle in hand. I can't go anywhere without my water bottle, it's a permanent fixture, and my constant companion at all times. Every day the human body sheds between 10 and 12 cups of water. Your body is a pretty demanding machine. Just like a car needs gas to operate; your body needs water to be active and to live. So when your body loses water, it expects that it be replaced.
Drinking water is a part of the give and take understanding we have with our body. For example, if I drink plenty of water my body rewards me with excess energy and oxygen, my body temperature remains at a relatively comfortable level, toxin elimination, and my muscles and joints are protected from injury. See, drinking enough water really is a win-win situation.
On the other hand, if I'm stingy with my water and ignore this give and take contract with my body, it will punish me with dehydration, dizzy spells, headaches and fatigue.
To find your minimum daily water requirement simply take weight in pounds divide by two the answer is how many ounces water your body requires on a daily basis.
weight in pounds/2 =water in ounces
ex. 220 lbs /2 = 110 ounces of water daily (MINIMUM)