Can anyone help me with this one? My Husband and I are having a dispute over those kind of scales. I dont know how they work as far as measuring your body fat, but he is saying that it is impossible for it to know that kind of information. Does anyone out there know how it can determine your body fat percentage? Also, if you know how it can determine how much water is in your body; please answer that one too, since I know our next dispute will be over that next (lol). Thanks