HOW MUCH WATER SHOULD A POST-OP CONSUME A DAY?
As much as possible. At least a liter and a half, or 64oz. a day as an even better goal. Flavored water drinks (Propel, etc.) are counted as water, even though they have a very small amount of calories. Drinks should be essentially non-caloric, and should have no carbonation, caffeine, or high levels of citric acid. You can count half the volume of your protein drinks toward your water requirement.