Answer:
Improving cardiovascular fitness can reduce your risk of developing heart disease by increasing the efficiency of your heart, lungs, and blood vessels. The easier it is to pump blood through your body, the less taxing it is on your heart.
Explanation:
ig d. 10-17 years old
but the actal age would be12-19 years old
It increases the efficiency with which the body delivers oxygen and nutrients to its cells, is the correct answer.
Hope I helped !
