Option (a) is correct. It is true that more you exercise, higher the rate of your resting heart will be.
<h3>What impact does exercise have on the heart?</h3>
Exercise improves the efficiency of the cardiac muscle. Your muscles assist in circulating blood throughout the body when you exercise, relieving some of the tension and work from the heart.
Over time, the heart gets stronger and the effort required to pump blood decreases.
As you start to exercise, your heart will beat more quickly and your circulation will rise, which will speed up the delivery of oxygen-rich blood to your muscles.
The heart will strive to meet the demand by increasing both the heart rate and the force with which it contracts as the need for blood rises.
Your heart will beat more frequently and contract more forcefully with each beat, allowing it to circulate more blood throughout the body and increasing oxygen supply.
Learn more about heart rate here:
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