Body composition differs from body weight in that it refers to the relative proportions of fat, muscle, bone, and water in the body, providing a more comprehensive view of health. Body weight alone does not indicate whether an individual is primarily composed of lean muscle or excess body fat, which is crucial for understanding health risks. A higher proportion of muscle mass typically correlates with better metabolic health and physical performance. Therefore, assessing body composition can offer valuable insights for designing effective fitness and nutrition programs aimed at achieving specific health goals.