Drinking between 1/2 and 1 ounce of water daily for each pound you weigh can set the body's metabolic thermostat, according to Golglia, author of TURN UP THE HEAT: UNLOCK THE FATBURNING POWER OF YOUR METABOLISM. Without enough water the body drops its temperature and conserves heat by storing fat for insulation, which is a survival mode. Drinking enough water (for a man 180 pounds, that's a minimum of 90 ounces or about twelve, 8 ounce glasses of water a day) will increase your core body temperature so you actually will burn fat.