Much emphasis has been given in the earlier discussion to aerobic fitness, because this form of conditioning is extremely important. It should be noted, however, that other types of conditioning also have benefits. A total exercise program should include strengthening exercises, to maintain body mass and appropriate levels of strength for daily functioning, and stretching exercises to maintain joint mobility and flexibility. The specificity principle described above indicates that no one exercise is likely to produce the overall conditioning effect. In general an exercise plan should consist of aerobics, exercises that increase the strength and endurance of various skeletal muscle groups, and flexibility exercises to maintain good joint function.
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