Help article: What do the light patterns mean on my Flex? - Found it! The blinking lights back and forth just mean it hasn't synced recently enough to tell us our steps. We also never actually plugged it into our conputer which might have something to do with it. Also apparently we can start sleep mode from our wrists. How have we gone so long without ever knowing this??
The complete collection of Fitbit Badge achievements. See what achievements you can get on the Fitbit app for: daily steps walked, total miles walked, daily levels climbed, total levels climbed, Fitbit challenge competitions, walking for charity and more. Fitbit badges give a nice fun twist on trying to reach your daily fitness and exercise goals. http://www.developgoodhabits.com/fitbit-badge-list/