What component of fitness is most associated with "body composition"?

Body composition refers to the proportion of fat and non-fat mass in the body, making the measurement of lean mass versus fat mass the most relevant aspect in this context. This component of fitness is crucial for understanding an individual's overall health, fitness level, and risk of disease. While other components such as muscular strength, cardiovascular endurance, and flexibility are essential for overall fitness, they do not directly define body composition. Instead, they measure different abilities and aspects of physical performance. Therefore, the focus on lean mass versus fat mass highlights the importance of understanding body composition and its implications on health and fitness.