Athletes’ hearts are heavier than average because:
(1 point)
Responses
like any muscle, they grow denser with use.
like any muscle, they grow denser with use.
the damage caused by working out too much leaves scar tissue.
the damage caused by working out too much leaves scar tissue.
constant strain on the heart leads to inflammation.
constant strain on the heart leads to inflammation.
athletes need less oxygen than the average human.