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Sleep & Circadian Health

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Ten Minutes Before Nine: Rethinking Morning Light in the British Winter

Ten Minutes Before Nine: Rethinking Morning Light in the British Winter

Short outdoor light exposure soon after waking is one of the few winter habits with a plausible physiological mechanism behind it. This guide explains what morning daylight does to the body clock, how strong the evidence really is, and how to build a ten-minute routine around a UK winter.