liarslynn liarslynn
  • 21-10-2015
  • Health
contestada

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

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BUBBLYBOB1 BUBBLYBOB1
  • 21-10-2015
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
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Аноним Аноним
  • 22-10-2015
Your heart gets oxygen.  It actually does tire, once you die.
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