@Mindfulgrandma You don't lose data if you restart your tracker. Zone minutes are heart rate based. If you tracked your exercise either with the Exercise app or SmartTrack, you can see your heart rate graph and your zones. Or look at your zone minute heart rate graph. What do you see ?
Laurie | Maryland
Sense 2, Luxe, Aria 2 | iOS | Mac OS
Take a look at the Fitbit help site for further assistance and information.
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