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My heart rating monitoring fluctuates wildly during some cardio exercises and has gotten dramatically worse over the last couple of weeks. Doing hill running my HR will show a reading of 90s when I know I’m closer to 160. I have tried moving it up and down my wrist tightening and loosing.
Me as well. When I was doing intense weight lifting my pulse read "72" or something radically low. Also, when I wasn't even using my watch today (it was off my wrist) the device told me I had hit 176bpm.
