it keeps us healthy because it pumps the blood
it pumps blood to other parts of our bodies
Science keeps us healthy as it is used to make many things like vitamins which keep us healthy.
it keeps us healthy because when your dying you eat then you will be healthy
Protein is of course healthy to us
It lets the fluids out of the body that allows us to urinate.
it get you heart rate up. so you are more healthy
To keep you alive, and to keep us to be healthy.
chimi chonga
It builds up your cardio.
To keep us healthy
Tennis is a helpful exercise. It keeps you active which helps you stay healthy.
it keeps your heart more active and so does not 'age' faster than anyone who does not exercise. it also helps keep the muscles healthy and so helps keep you more 'moveable' when you get older.