Norepinephrine and also orexin keep some components of the brain active while we are awake. Various other neurotransmitters that form sleep and also wakefulness consist of acetylcholine, histamine, adrenaline, cortisol, and also serotonin. Stage 1 non-REM sleep is the changeover from wakefulness to sleep. Throughout this brief duration of reasonably light rest, your heartbeat, breathing, and eye movements slow-moving, and your muscular tissues unwind with occasional twitches. Your mind waves begin to slow from their daytime wakefulness patterns.

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