this post was submitted on 08 Jun 2026
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Running
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My partner runs ultras. She is a slow runner. Longest race 100 miles. I get safety notifications from her fitness watch in the middle of the night that her heart rate is dipping into the high 30s.
Isn't below 40 dangerous?
For most people, that’s why the alarm goes off and notifies me. But, I think it’s normal for some runners.
Ah, maybe endurance athletes are pumping enough blood still (due to stronger hearts) that it's not an issue, i giess?
Yeah, exactly. And it’s during sleep.