02-09-2014 11:59
02-09-2014 11:59
I am concerned with my sleep efficiency. According to my fitbit one i average 40% efficiency. Can this be wrong?
02-09-2014 12:08
02-09-2014 12:08
02-18-2014 10:47
02-18-2014 10:47
The fitbit only records movement (typically arm movement). How that relates to sleep is based on the assumption you progress through 4 or 5 stages of sleep, and in deep sleep you don't move much.