Which of the following is NOT a component of fitness?

Genetic predisposition is not considered a component of fitness. The primary components of fitness typically include cardiovascular endurance, body composition, flexibility, muscular strength, and muscular endurance. These components are directly related to an individual's ability to perform physical activities and maintain overall health.

Genetic predisposition refers to the inherent qualities or traits passed down from one’s parents, which influence various aspects of health and fitness but are not alterable through training or lifestyle changes. While genetics can impact how an individual responds to exercise and their potential for certain fitness levels, they do not represent a measurable or trainable aspect of fitness itself.

In contrast, the other options listed—cardiovascular endurance, body composition, and flexibility—are all areas that can be developed and improved through targeted exercise and conditioning programs. Hence, these are fundamental components that contribute to an individual's overall physical fitness.