From Daniel on 2018/01/02 13:34:20 +0000
Google Fit only seems to recognise the starting- and end-time of the tracking and calculates the time asleep by that.
The problem is that awake detection and fall asleep time is not taken into account by that, which leads to an inaccurate presentation of how long you slept.
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/32792839-google-fit-sleep-data-only-for-asleep-time