Fitness is a set of attributes that people have or achieve that relates to the ability to perform physical activity. The Centers for Disease Control and Prevention (CDC) cite five components of physical fitness - muscular strength, flexibility, cardiorespiratory endurance, muscular endurance and body composition.
The CDC recommends that people of all ages participate in 30 minutes of physical activity (of mild intensity) daily. In addition, cardiorespiratory endurance activity should be supplemented with strength-developing exercises at least twice per week for adults, in order to improve musculoskeletal health and reduce the risk of falling.
According to the CDC, 50% of Americans do not exercise enough to achieve health benefits. Physical fitness and dietary intake are good indicators of a person's overall likelihood of developing serious and chronic health problems.

Related Terms

Aerobic activity, cardiorespiratory endurance, cardiovascular endurance, muscular strength, muscular endurance, body composition, flexibility.