Submitted by CanGroundbreaking814 t3_ylgnyq in askscience
Caring_Cactus t1_iv15d78 wrote
Reply to comment by CardiOMG in Why does resting heart rate lower as people get fitter? by CanGroundbreaking814
So many good answers here, I've heard weak heart muscles are one of the biggest causes of death among super healthy old people (100+ years old).
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