Why Doesn’t the Heart Get Tired Like Other Muscles?

Why Doesn’t the Heart Get Tired Like Other Muscles?

Anywhere from 60 to 100 times every minute of every day of every year of your (hopefully) long life, your heart beats. Unlike the other muscles in your body, however, your heart almost never gets tired . . . until it stops for good. Here’s why.

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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/w-xeU4TTfD8/why-doesn-t-the-heart-get-tired-like-other-muscles-1567496118
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