When you exercise your muscles ache afterwards, so how come your heart doesn’t ache after doing cardio?

Question

When you exercise your muscles ache afterwards, so how come your heart doesn’t ache after doing cardio?

In: Biology

Answer 1

You are “semi” injuring your muscles. Like a scar, it heals back a little “extra”, bigger, etc.

For your heart, you aren’t injuring it.

Your lungs are likely to feel it more than your heart. It pumps everyday, sometimes more if you drink caffeine