asked 133k views
1 vote
Why does your heart never tire of constantly beating to pump blood throughout your body?

asked
User Jivy
by
7.9k points

2 Answers

4 votes
Your heart gets oxygen.  It actually does tire, once you die.
answered
User Ahmed Elkoussy
by
7.7k points
2 votes
A heart doesn't 'tire' because it's doing what it's supposed to do which is pump blood. The oxygen we breath is what makes it pump
answered
User David Grant
by
8.8k points

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