Dark rooms improve sleep continuity. Start here before a $3k mattress.
Sleep
Strong evidence
Blackout Curtains
The cheapest sleep upgrade that still works.
How to use
Cover street light. Add a travel mask for hotels.
Details
- Type
- Environment
- How it works
- Removes nocturnal light cues.
- Scientific evidence
- Light at night is a well-documented circadian disruptor.
Editorial rating ★ 4.8
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