Exercise is also important for children. Vigorous physical activity helps a childs overall development.
Research shows that exercise can reduce the gathering of cholesterol on artery walls of children and adults. Too much cholesterol can increase the risk of heart disease. There is, however, no evidence that exercise prolongs life. Former athletes do not live longer than nonathletes, nor are they saved from heart disease. The benefits of exercise cannot be kept for more than a few months or years without continued exercise. Even Olympic-level athletes will go back rapidly to pre-training levels once they stop exercise. The amount of activity necessary for fitness varies from person to person. Age, physical structure, health, and gender are important factors.
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