Way back in 2017 my resting heart rate mysteriously rose (by some 10bpm) despite no change in my overall activity levels etc. No indications of being unwell, suddenly less fit etc etc. Old style measure of heart rate showed it had not changed! Various attempts to re-set Alta HR (iOS linked) made no difference, so just accepted it as consistent error in device plus app. since it then stayed consistent around that level.
Suddenly following most recent app update in late May resting rate has plunged in 10 days back to previous levels, dropping 8-10 bpm. Again, no change of any kind in my activity regime, diet, feeling of wellbeing etc etc.
Logically I can only attribute this to some change in the app, since the Alta firmware has not changed for a long time and the HR has not been re-set in many many months.
Had as anyone else had a similar experience?
(PS - not perturbed by this as all indicators are that I’m physically fine and have been all along! Just curious!)
