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lWear your tracker on top of your wrist, and make sure the back of the device
is in contact with your skin.
lConsider tightening your band before a workout and loosening it when you’re
done. The band should be snug but not constricting (a tight band restricts
blood flow, potentially affecting the heart-rate signal).
Handedness
For greater accuracy, you must specify whether you wear Charge 4 on your
dominant or non-dominant hand. Your dominant hand is the one you use for writing
and eating. To start, the Wrist setting is set to non-dominant. If you wear Charge 4
on your dominant hand, change the Wrist setting in the Fitbit app:
From the Today tab in the Fitbit app, tap your profile picture >Charge 4 tile
>Wrist >Dominant.
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