Answer:
I think the only thing that relates to "economic factor" would be money.
Explanation:
Cancers and organ failures
Cardiac Muscles job is to make the heart beat. Cardiac muscle is a unique type of muscle for one reason, in that it is involuntary, made for continuous usage, and can only be found in the heart.
C. Rep, A consecutive repetition exercise that tests and measures your resistance/endurance. Hope this helps!
we need to know in order to work out safely is your limitations.