What are the 5 stages of sleep?
What are the 5 stages of sleep? Stages of SleepStage 1 of non-REM sleep. When you first fall asleep, you enter stage 1 of non-REM sleep. Stage 2 of non-REM sleep. This is the stage where you are actually fully asleep and not aware of your surroundings. Stage 3 of non-REM sleep. Stage 4 of non-REM sleep. Stage 5: REM sleep. Is 5 sleep cycles good? The first stage through REM takes about 90 minutes to complete, and adults typically need to complete at least four or five sleep cycles per night, or 6 to 9 total hours of sleep....