[temporallobe]

Are you serious? Your RHR is in the low 40s? Mine is typically 58-65 and I was told I have bradycardia!

[hn72774]

Yes, and it was in the 50-60 range when I was drinking. My smartwatch use over a couple years has been informative.

It's a combination of genetics and athletics.

Edit: my smartwatch readings include sleep. Sitting upright at a table right now it's around 65

[layla5alive]

My RHR is around 35. The rare occasions I get to go on vacation it dips into the high 20s while I'm sleeping. I haven't been on a real vacation in 2 years, though :/

[mikestew]

Serious distance runner here: about five years ago while laid up in the hospital the alarm kept going off in the middle of the night on the HR monitor machine.

Nurse: “it goes off if your HR is too low.”

Me: “what’s it set to?”

Nurse: “39 BPM”

Me: “ yeah, you’re going to want to turn that down a few notches.”

Genetics play a role, too. Back in the day, one of the fastest road bike racers in WA state told me he’d never seen his resting HR below 60.

[lostlogin]

We have a heart rate monitor at work that we use on 1-2 patients for day. It alarms at rate below 50BPM. At least once a week it's alarming at us.