Aug 13, · Norepinephrine and orexin (also called hypocretin) keep some parts of the brain active while we are awake. Other neurotransmitters that shape sleep and wakefulness include acetylcholine, histamine, adrenaline, cortisol, and serotonin. Genes and sleep. Genes may play a significant role in how much sleep we paddcheckcomocennatamocetyrewind.xyzinfog: Waltz.
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