Crossword clues for Sleep cycle 3 lettersAnswerClueREMSleep cycle acronymREMSleep cycle lettersREMSleep cycle, for shortREMPart of a sleep cycle: Abbr.REMPart of a sleep cycleREMSleep cycle occurrenceREMSleep cycle inits.REMStage of the sleep cycleREMSleep cycleREMSleep cycle partREMPart of a sleep cycle, for shortREMType of sleep cycleREMSSleep cycle phenomenaREMSSleep cycle occurrencesREMSSleep cycles