light sleep
The lighter stages of sleep, the drifting doze a small sound can lift you out of. A night spends more time here than in any other stage.
Where it comes up
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01
What happens while we sleep?
What happens while you sleep: light, deep and REM sleep, how the cycles repeat through the night, and why brief wakings are a normal part of it.
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02
Why do I wake up too early and can't get back to sleep?
Waking an hour or two before your alarm and lying there until it goes? Why it happens, from an early body clock to low mood, and what helps you sleep later.
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03
Why can’t I fall asleep?
Lying in bed tired but unable to drop off? Why trying harder keeps you awake, why the wait can feel longer than it was, and what to try tonight.