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Polyphasic Lifestyle General Age Exercise Dark period Travelling Food Flexing Non-reducing Long term Circadian management Gaining weight Seasonal changes in sleep Substances Caffeine Alcohol Cannabis Stimulants Modafinil Antidepressants Herbal supplements Sleep tech Sleep trackers Olimex Zeo Dreem Pavlok Sonic Bomb StayAwake NoMoreOversleeps Activity trackers Napchart Muse S Miscellaneous Skipping sleep Emergencies Daylight savings time Sickness Consistency Religion Related info NoFap Wim Hof Method Buteyko Meditation Lucid dreaming Yoga nidra Polyphasic philosophy Chronotherapy Mental illnesses