I am going to hijack this top comment. > If the heart is a muscle, why doesn't it get tired? Because it's illogical to assume muscles fatigue. They physically don't get to the point where they can no longer operate --…
I am going to hijack this top comment. > If the heart is a muscle, why doesn't it get tired? Because it's illogical to assume muscles fatigue. They physically don't get to the point where they can no longer operate --…