Non-REM

Non-REM is any of the other stages of sleep. During these stages of sleep, one could be drifting off to sleep

(N1 stage), during stage N2 one becomes less aware of their surroundings and body temperature drops, before reaching the deep sleep stage N3. Sleep walking, unusual sexual acts (colloquially), sleep eating, sleep terrors are a few of the parasomnias that occurs during Non-REM.