Quote Originally Posted by TimeDragon97 View Post
REM usually starts around 4-6 hours after falling asleep.
I donīt think so, REM hits every 90 minutes or so of NREM sleep and it lasts for about 10 min at first but it becomes longer as you complete more sleep cycles. Thatīs why it is better to try and LD after some hours of sleep, ussually 4-6