01-24-2021
18:09
- last edited on
01-25-2021
03:10
by
AlvaroFitbit
01-24-2021
18:09
- last edited on
01-25-2021
03:10
by
AlvaroFitbit
Charge 3 shows HR in below zone during an intense workout.
Moderator Edit: Clarified subject
01-25-2021
03:16
- last edited on
11-05-2025
04:23
by
MarreFitbit
Community Moderators ensure that conversations are friendly, factual, and on-topic. We're here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
01-25-2021
03:16
- last edited on
11-05-2025
04:23
by
MarreFitbit
@Fitgirly Welcome to the Fitbit Community!
Let me help you with this. I suggest you clean the back of your device with cotton and rubbing alcohol and restart it. Turn the heart rate off, save and sync then turn it on save and sync again. Also check these tips to improve the heart rate reading on your device. Note that sweat could affect the heart rate sensor and based on suggestions from the Community members you could try using a sport wristband to quickly remove excess sweat when you are exercising.
Let me know how it goes.
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