A Healthy Sleep-Wake Cycle Tags: HealthsleepPhysiologicalPsychologicalWellbeingSleep-Wake CycleNeurocognitive FunctioningEmotional FunctioningPhysical RestorationCircadian RhythmRapid Eye Movement SleepREM SleepNREM SleepDreamingStages of SleepArousabilityDelta WavesSlow Wave SleepSleep Deprivation