Missed from that first comment is that... the heart not getting tired is a probl... | Hacker News

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		bad_user on March 21, 2020 \| parent \| context \| favorite \| on: If the heart is a muscle, why doesn't it ever get ... Missed from that first comment is that... the heart not getting tired is a problem. You can overwork your heart which can lead to lesions. Endurance athletes who exercise excessively can have heart problems. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3538475/ That muscles get tired and sore is a feature because it prevents damage.

hinkley on March 21, 2020 [–]

Atrial fib is no joke. I don't know who needs to hear this, but if you are considering becoming an endurance athlete, and especially if you are considering transitioning to ultra-endurance, go see a fucking doctor before, after and during.

Source: father had a stroke 20 years later.

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