Question

question 5 of 5
which of the following is a benefit of good cardio-respiratory endurance?
a. more muscle mass.
b. increased blood pressure.
c. increased flexibility.
d. a more efficient heart.

Explanation:

• Option A: More muscle mass is related to strength training and muscle - building exercises, not cardio - respiratory endurance. Cardio - respiratory endurance focuses on the heart and lungs' ability to supply oxygen during sustained physical activity, not on increasing muscle mass.
• Option B: Good cardio - respiratory endurance actually helps in maintaining or reducing blood pressure (by improving the heart's efficiency and blood vessel health), rather than increasing it.
• Option C: Increased flexibility is associated with activities like stretching, yoga, etc., and is not a direct benefit of cardio - respiratory endurance.
• Option D: Cardio - respiratory endurance exercises (like running, cycling) train the heart to pump blood more efficiently, as the heart becomes stronger and can deliver oxygen - rich blood to the body's tissues more effectively.

Answer:

D. A more efficient heart.