Avoid carbonated beverages. They are difficult to drink quickly and create a feeling of fullness, so you'll end up drinking less. Drink 2 to 3 cups of water a few hours before exercising. After your workout, drink 2 cups of fluid for every pound lost. There are several types of heat-related illnesses.
Heat cramps are severe, even disabling cramps in the hands, feet or calves.
Heat exhaustion may cause weakness, dizziness, drenching sweats, clammy skin and fainting. It can be life-threatening if not properly treated. He had apparently been hiking there the previous day without enough water. Even after a half-hour of trying to lower the man's temperature with ice packs and intravenous fluids, his body temperature registered 108 degrees. The man lived.