Hi, @Sgunn12 welcome to the community. You may find this article of interest How do I track heart rate with my Fitbit device? Try restarting your "Sense", hold the side button for about 20 seconds and release it when the Fitbit Logo appears. After about 30 seconds it should be up and running again. If you are still stuck please post here again.
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Gr4ndp4 | UK
AWAKE! for morning in the bowl of light has cast the stone that set the stars to flight.
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