By Mary Breheny and Rosie Gibson

Sleep may seem straightforward – everyone does it, after all. But as many of us know, getting enough sleep is not necessarily a simple task, despite what you might read in the media.

How to sleep “properly” is a favourite topic of self-help articles, with headlines such as “Expert advice to get a good night’s sleep whatever your age” promising the answer to your nocturnal awakenings.

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