Which of the following is NOT one of the five components of health-related fitness?

The five components of health-related fitness are essential for understanding how to maintain and improve overall health. These components include cardiovascular endurance, which measures the efficiency of the heart and lungs; muscular strength, which refers to the amount of force a muscle can produce; muscular endurance, which reflects how long a muscle can continue to perform without fatigue; flexibility, which is the ability of joints to move through their full range of motion; and body composition, which is the ratio of fat to lean mass in the body.

Reaction time, on the other hand, is not considered one of the five components of health-related fitness. Instead, it is classified as a skill-related component of fitness, which relates more to athletic performance and coordination rather than overall health. Thus, understanding the distinctions between health-related and skill-related components helps clarify why reaction time does not fit within the primary framework for assessing health-related fitness.