Question

which of the following is not a benefit of improved cardio - respiratory fitness?
a. diaphragm grows stronger.
b. faster post - exercise recovery time.
c. arteries grow smaller.
d. lungs expand more easily.

Explanation:

Improved cardio - respiratory fitness strengthens the diaphragm, reduces post - exercise recovery time, and makes lung expansion easier. However, it does not cause arteries to grow smaller. In fact, regular cardio - respiratory exercise can improve arterial function and may even lead to better blood vessel dilation.

Answer:

C. Arteries grow smaller.