Question

Which is a way that physcial activity benefits your cardiovascular system?

a
Reduces the risk of developing fragile bones as you age
b
Stimulates your body to produce chemicals called endorphins
c
Strengthens the heart muscle so that it pumps blood more efficiently
d
Causes your lungs to work less efficiently

Answer 1

c — Physical activity strengthens the heart muscle, improving its efficiency at pumping blood and reducing cardiovascular strain.