Why is the myocardium important? Check all that apply.

A. It is responsible for making the heart pump.

C. It allows the heart to relax and receive blood.

These are correct, already answered for those who are looking ;)

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.