Experts generally agree that fitness consists of five health related and six skill related components that contribute to a person's overall level of health and well being.
Health related components
Cardiorespiratory endurance - the ability to perform large dynamic exercise for extended periods of time without undue fatigue.
Muscular strength - the capacity of a muscle or muscle group to exert force or to move heavy objects.
Muscular endurance - the capacity to perform repeated muscular contractions without fatigue. In other words, to continue activity that requires muscle strength.
Flexibility - the ability to move a particular joint in the body through its entire range of motion.
Body composition- the make-up of the body in lean mass, such as muscle, bone, vital tissue and organs, and fat mass, which is measured in terms of body fat.
It is these five components of fitness that are most often measured on state and national fitness tests.