Regular physical activity can prevent disease by
a. controlling weight
b. controlling blood pressure
c. improving cardiorespiratory fitness
d. all of the above

D. all of the above

Exercise can help prevent excess weight gain or help maintain weight loss. When you engage in physical activity, you burn calories. The more intense the activity, the more calories you burn.
Heart disease and stroke are two of the leading causes of death in the United States. But following the Guidelines and getting at least 150 minutes a week (2 hours and 30 minutes) of moderate-intensity aerobic activity can put you at a lower risk for these diseases. You can reduce your risk even further with more physical activity. Regular physical activity can also lower your blood pressure and improve your cholesterol levels.

The answer is d as regular physical activity controls weight by using up the glycogen that has been stored due to the prescence of excess cabohydrates in the body. It improves cardiorespiratory fitness as it makes the heart to pump blood at a faster rate thereby controlling blood pressure.

If you under eat, your bones will narrow.

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