Rich works out every day. Paul does not work out at all. Whose heart expels more blood per contraction, resulting in lower BPM?
Rich Paul
A B
When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.
expels more blood with each contraction
stronger
more
MORE
MORE
stronger heart muscle
lower
blood expels
blood expels