The Fitbit Community is a gathering place for real people who wish to exchange ideas, solutions, tips, techniques, and insight about the Fitbit products and services they love. By joining our Community, you agree to uphold these guidelines, so please take a moment to look them over.
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.
Best Answer
