Why does your heart never tire of constantly…

Discussion in 'Health' started by Joshopoke, Nov 8, 2015.

  1. Joshopoke

    Joshopoke New Member

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    Why does your heart never tire of constantly beating to pump blood throughout your body?
     
    Joshopoke, Nov 8, 2015
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  2. Sjaylyn

    Sjaylyn New Member

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    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
     
    Sjaylyn, Nov 8, 2015
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