I'm beginning to doubt the accuracy of my Body Battery and/or Sleep readings. My BB was 72 at bedtime (it was an easy day). The watch claims I slept 7 hrs 54 min, including 1 hr 10 min Deep and 2 hr 15 min REM and awake 9 minutes, which it labelled Good with a rating of 83. So my BB should have been topped up, right? Nope. When I got up it was just 84, up only 12 points. Monday night my BB was 59 when I went to bed and 100 when I got up, rising 41 points overnight. How was my sleep that night? Only slightly better by the numbers. There seems to be a lack of consistency in recovery during sleep.