sleep cycle with labeled night stages and phases description outline diagram |
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navigate by keyword : sleep cycle stages rhythm phase clock healthy biological time diagram scheme person night body brain human hour illustration schedule regulation educational wake infographic routine process wellbeing healthcare medical chart fatigue information scientific model wellness labeled deep relax natural levels outline concept vector breathing health bed circle pattern bedtime awake |
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Sleep cycle with labeled night stages and phases description outline diagram. Educational scheme with biological brain and body processes vector illustration. Delta waves, deep relax and eye movement. |
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