sleep cycle
pl: sleep cycles
Related Words
circadian rhythmwakefulnessREMinsomniamelatonincortisolnapslumberdozesnoozedreamnightmaresomnolencedrowsinessfatigueexhaustionrestrecoveryhibernationestivationcircadiandiurnalnocturnalcrepuscularnarcolepsyapneasomnambulismsleepwalkingjet lagshift workalertnessvigilanceconsciousnessunconsciousnesscomastuportrancemeditationrelaxationbedroommattresspillowblanketpyjamasalarm clockdarknesslightsunlightmoonlighttwilightdawnduskmidnightmorningeveningnightfallbiological clockhomeostasismetabolismtheta wavedelta wavealpha wavebeta wavesynapseneuronhypothalamuspineal glandadenosinecaffeinesedativehypnoticstimulant