[necovek]

And reading further, there is evidence of people getting worked up about what are not problematic readings in this very thread.

[lynx23]

Watching a heartrate monitor sometimes has the reserve-progress-bar effect. You know the deal. You realize the pump is on a hightened frequency, so you see what your smart watch says. And the more you watch it, the more anxious you get, so the rate stays more or less high.

[bookofjoe]

aka "white coat hypertension": https://www.mayoclinic.org/diseases-conditions/high-blood-pr....