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Why does your heart never tire of constantly beating to pump blood throughout your body?
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Why does your heart never tire of constantly beating to pump blood throughout your body?

User Jivy
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2 Answers

4 votes
Your heart gets oxygen.  It actually does tire, once you die.
User Ahmed Elkoussy
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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
User David Grant
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