When exercising for aerobic endurance, you should never be breathless or exercise to the point that you cannot talk while engaging in the activity. Aerobic exercising includes activities that use the large muscle groups such as the legs and arms. Muscular Strength and Endurance 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 heavier weights, pick up more books from a desk or stand up from a chair with greater ease.
Muscular endurance refers to the ability to repeat muscle exertions.
As muscular endurance increases, the ability to repeat muscle exertions also increases. Flexibility Flexibility is the ability to move through the full range of motion allowed by a joint. The older people get, the less flexible they become, because joint mobility decreases. The more a joint is used, the more flexible it will become. Increasing flexibility is most effectively achieved through stretching.