A sound exercise program should address the first four factors of physical fitness. The five components are aerobic endurance muscular strength muscular endurance flexibility body compositions Aerobic Endurance Aerobic endurance pertains to the body's ability to use oxygen. Aerobic endurance allows people to last longer when participating in activities such as running, walking, climbing stairs, riding a bike or swimming. The more aerobic endurance people have, the easier it is for them to participate in these activities. When exercising for aerobic endurance, you should never become breathless to the point that you cannot talk while engaging in the activity.
Aerobic exercise involves activities that use the large muscle groups such as the legs and arms.
Muscular Strength Muscular strength is the ability to exert a force against some type of resistance. Lifting a weight, picking up books from a desk and standing up from a chair are all examples of muscular strength. Strengthening the muscles allows people to lift a heavier weight, pick up more books from a desk or stand up from a chair with greater ease. Muscular Endurance Muscular endurance refers to the ability to repeat muscle exertions. As muscular endurance increases, the ability to repeat muscle exertions also increases.