If you have a smart device such as a Fitbit that tracks steps, you can add them to Lark and it will convert those steps into activity data. While Lark and Fitbit won't pair directly, this is a great way to incorporate your step data. You can do so by tapping on the profile icon at the upper left side (or upper right side in Android) and then go to the activity tab. You will then see a plus symbol you can tap on to log your activity. "Add activity" --> "steps" and from here you can add your step data!
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