On the average a person should drink eight 8 ounce glasses of water every day. The overweight person needs one additional glass for every 25 pounds of excess weight. The amount that you drink should be increased if you exercise or if the water is hot and dry. Water should preferably be cold. The system absorbs cold water more quickly that warm water.
Some evidence suggests that drinking cold water can burn calories.
Water irrigates your system. It cleanses, cools, comforts the stomach and adds to your digestive and intestinal regularity. Endocrine gland functions improve. Fat is used as fuel because the liver is free to metabolize stored fat and natural thirst returns. There is a loss of hunger almost overnight, If you stop drinking enough water, your body fluids will be thrown out of balance again and you may experience fluid retention, unexplained weight gain and loss of thirst.