# Entrainment of the human circadian clock to the natural light-dark cycle

Wright KP Jr, McHill AW, Birks BR, Griffin BR, Rusterholz T, Chinoy ED · Current Biology 23(16):1554–1558 · 2013



## Key finding

A week of camping without electric light shifted the internal clock ~2 h earlier and aligned it to sunrise/sunset.



[Read the paper](https://pubmed.ncbi.nlm.nih.gov/?term=Entrainment+of+the+human+circadian+clock+to+the+natural+light-dark+cycle)

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