It was actually an interesting experiment on my part, but my wife bought me a Fitbit Alta for my birthday last year. I actually wore this for an entire year. The good thing about this band is that you can set alarms with it. I would try to wake up at 6am every weekday.

The Alta finally gave out a few weeks ago, but it's interesting, the Alta made my morning alarm a habit, and I've been waking up at 6 in the morning without the alarm.