Man in his thirties engaging in 'segmented sleep'. Waking up for an hour in the night has been argued to be humans natural state.

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Size: 5760px × 3840px
Location: London, England, United Kingdom
Photo credit: © Jeff Gilbert / Alamy / Afripics
License: Licensed
Model Released: Yes

Keywords: anxiety, bedroom, chillout, insomnia, insomniac, man, natural, night, nightime, penumbral, pyjamas, reading, segmented, sleep, sleeping, state, time, zone