Sometimes I got to bed before my set bedtime.
The next morning Garmin seemed to know exactly when I went upstairs, even if I didn't go to sleep straight away.
For example, my bedtime is set for 22:00. If I go up to read at 20:53, it thinks I slept deeper from 20:53 till about 23:00 than I did for the rest of the night, even though I was really sat up and reading all that time! Also, it cannot have worked it out from my heartrate or position, because I would have been laid down just the same on the sofa before going up and I also often get up out of bed when I put my book down to go to the toilet too, so it's not that is because of my last movement of the day either! (I just thinks I was asleep during the time I was reading)
So how the he*% does it know when I go to upstairs! It's creepy!
