Why is it important to get the heart beating faster?

As a person gets older, their hormones make it harder to circulate blood, so a strong heart is needed.

When the heart beats faster, it is getting more exercise that will make it stronger over time.

If the heart does not beat faster sometimes, it will begin to slow down.

Most people have weak ventricles and need to exercise the atria to maintain a heart healthy balance.

(30 points!)