Drinking more water than you need won't help you gain weight, however, because water has no calories. Because water is a calorie-free beverage, it doesn't cause actual gains in body fat — although retaining extra fluid can tip the scale a little higher.Is drinking a lot of water good for losing weight?
Drinking water as part of a comprehensive weight loss program that includes reducing calories and increasing physical activity is a good strategy for losing weight, especially if you drink water instead of sugar-sweetened beverages.Do you *really* need to drink a gallon of water a day?
Experts recommend drinking approximately two quarts (64 ounces or about eight glasses) of water each day. Of course, if you live in an extremely hot or cold area — or if you exercise a lot — you may need to drink a gallon or more of water every day.