Describe the benefits of physical activity for three different body systems

Respiratory systemas your activity level increases your lungs begin to work more efficiently, pulling in larger amounts of air and increasing the amount of oxygen delivered to your bodycardiovascular systemregular physical activity strengthens the hear muscle so that it pumps blood more efficiently.
musculoskeletal systemphysical activity strengthens muscles and bones, reducing your risk of developing fragile bones as you age.

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