Sleep: Why the words look blurred when you read in bed

Plenty of bodily processes are active under the cover of darkness. One reason for this is that every cell in the body has its own circadian rhythm, or ‘clock’. We reveal what happens to the body at night and why.

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http://www.dailymail.co.uk/health/article-2838300/Sleep-words-look-blurred-read-bed.html

18 November 2014