Hi there, @Corinejk @IanS.. Welcome to the Community Forums. Thanks for trying to troubleshoot the issue with your Fitbit devices before reaching out.
I'm wondering if you're using another app connected to your Fitbit account that will add more steps? Mobiletrack maybe? Low-power step sensors inside your phone track your steps and send the data to the Fitbit app. We recommend using MobileTrack if you forget your Fitbit device at home.
Note that adding more than one Fitbit device to your account gives you the convenience of switching between devices while still seeing a holistic view of your daily activity on your dashboard.
If you want to negate the steps tracked while you were sleeping, see How do I add, edit, or delete Fitbit data and activities?
As a friendly reminder, please note that Fitbit devices have a finely-tuned algorithm for step counting. The algorithm is designed to look for intensity and motion patterns that are most indicative of people walking and running. When working at a desk, cooking, or performing other activities with arm movements, a device on your wrist may add some steps. When you’re doing activities that involve arm movement—such as working or cooking—you often walk a few steps in-between stationary periods as well, so the device tries to give you credit for those steps. For most customers, the number of extra steps added by arm-based movement isn’t significant when compared to your overall stats. For more information, see How does my Fitbit device calculate my daily activity?
Hope that helps.
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