body composition consists of % fat , % muscle, bone weight and also %water. For someone that has a high % fat we conclude that is not healthy as he/she consumes many fats from its diet. Someone that has high %muscle may have the same weight as the one with the high % fat but he/she has a more healthy way of living as not so much fat is consumed. Health has to be reflected upon someone's way of living such as diet, exercise, health problem, smoking etc.