Been experimenting with it since Beta 1. I set a sleep schedule, but my schedule is more of a "this is what I would like to do", but my daily routine doesn't always fit. It appears that if you set a bedtime of 10:30pm and a wake time of 6:30am, the sleep tracker will automatically "turn on" at 10:30 regardless of whether you are in bed or not. I thought it was supposed to use the watch sensors to determine if you are actually in bed trying to sleep. It does the same thing in the morning. I "hope" to sleep until 6:30am, but it doesn't happen every day, but the tracker stays on until 6:30 even if I get up at 6. Is this the intended behavior? If so, it doesn't seem very intelligent. It seems to be more of a "track my movements between these time periods, I am in bed", even if you are not. Anyone else figure this out?