1. Sleep Cycle - Sleep Stages - Sleep Diagram - How Much Sleep Do I Need - Sleep Dream Cycle - R.E.M. Sleep - Circadian Rhythm sleepcycle

    Sleep Cycle - Sleep Diagram - How Much Sleep Do I Need - Sleep Dream Cycle - R.E.M. Sleep - Circadian Rhythm. The sleep and dream cycle varies between individuals, most healthy people show a consistent pattern shown by the sleep graphs. Source: Luciddreamexplorers http://ygraph.com/chart/2076

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