I was previously using a Charge HR 2 and would have varying levels of exercise zones. I upgraded to a Sense and I’m lucky if I have 4 minutes of “fat burn”. What’s the deal? Do I need to turn something on to better monitor my heart rate?
Best AnswerCommon complaint, Fitbit has acknowledged the issue and there's still no fix:
https://community.fitbit.com/t5/Sense/Sense-heart-rate-sensor-not-accurate/td-p/4631299/page/2
Best Answer