Looks like my Apple Watch troubles may simply be a band that isn’t tight enough. I’m still using the original sport band, but just moved to a tighter notch and HR seems to be stable. It didn’t feel like it was that loose, but apparently it was.
I was actually so concerned about the alert the first time it came up (which was last week) that I went to a clinic. Had a full EKG, blood work, and everything. Nothing wrong at all. I’ve had the watch over a year and it’s been fine, but now I can’t trust it.
Does anyone else get false high heart rate alerts from their Apple Watch (Series 1 specifically)? Not a random high reading, but the alert that says HR is above 120 bpm for 10 minutes? I’ve had it twice now, but my HR is definitely nowhere near that high sitting at my desk.