Question

What is the most important element in building cardiorespiratory endurance?
a
aerobic exercise
b
isometric exercise
c
anaerobic exercise
d
weight-bearing exercise
Question 29 (1 point)
Which is a way that physical activity benefits your cardiovascular system?
a
causes your lungs to work more efficiently
b
reduces the risk of developing fragile bones as you age
c
stimulates your body to produce chemicals called endorphins
d
strengthens the heart muscle so that it pumps blood more efficiently

Answer 1

For the first question regarding the most important element in building cardiorespiratory endurance, the correct answer is:
**a. aerobic exercise**

For the second question about how physical activity benefits your cardiovascular system, the correct answer is:
**d. strengthens the heart muscle so that it pumps blood more efficiently**