hmm i really hope so. the guide says it won't work at the end of REM, but I guess theres no way of knowing if your done with REM or not. I guess I'll just try it every time I wake up in the night and hope that one of the times I'm still in an REM cycle. How long would you recommend I stay at it before giving up? Like when I specifically wake up, how many minutes should I remain still before knowing it won't work this time and I'll have to try again later?