My wife doesn't drink between meals, but when she eats, she can drink about 8 16oz glasses of water. That's a gallon of water with ONE meal. If we go to a restaraunt, we usually have to ask them to bring us a pitcher, or we'll have our waiter running all over the place trying to keep her glass full. I know you have to discount the ice but that's still a whole lot of water. I try to spread mine out through the day, but I still probably dring water about 80% of the time. I try to drink about a gallon a day, just because of how important hydration is to one's health.
