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10 Things Making Your Bedroom Harder to Sleep In
Most of them are environmental, and most are cheap to fix.
By Amara Whitfield, Sleep & Bedroom Editor · Published August 12, 2026 · 2 min read
Photograph: Dahl House Design / StockSnap
Sleep clinics consistently identify the same environmental culprits. None of them require a new mattress.
Temperature
Most adults sleep best between 16 and 19 °C. A bedroom that sits at 22 °C overnight will fragment sleep regardless of bedding quality.
Light leakage
Standby LEDs and street lighting through a 2 cm curtain gap are enough to suppress melatonin. Blackout linings and a strip of tape over a router light are the cheapest sleep upgrades available.
Noise floor
Intermittent noise wakes people; steady noise doesn't. A fan or white-noise source usually beats trying to silence a street.
Pillow height
The most common cause of morning neck pain in our panel was pillow loft that didn't match shoulder width — not the mattress underneath.
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