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Inviting additional friends to a challenge - Fitbit Community
Introducing Challenges, a New Way to Step It Up with Friends - Fitbit Blog
louisgray.com: Fitbit Launches Challenges to Push You and Friends to Go Further
How to use challenges in Fitbit for Android | Android Central
Fitbit Support a Twitter: "@heri @heri Hi. Sorry for the inconvenience. To better understand, mind to tell us more about the issue you're having with your Fitbit device? To further check on
Challenges on web Dashboard - Fitbit Community
Fitbit Tracker Support - ChallengeRunner
How to manage Challenges in Fitbit for Windows 10 | Windows Central
Getting lithe with a little help from my FitBit friends - Biznology
Solved: Inviting people to challenges who aren't friends - Fitbit Community
How Do These Step Challenges Work? – Struggles of a Healthy Foodie