In the fourth Mysterious You book, Zzz ..., kids uncover the
secrets of sleep to find out how the body clock works, why the
brain needs sleep, what happens during REM (Rapid Eye Movement)
sleep and more. This unique book explores the mysteries of the
human body using a mix of thoroughly researched factual
information, amazing anecdotes and surprising try-it activities.
Did you know? * If a person lives to be 70, they'll have spent 23
years sleeping. * Wolfgang Amadeus Mozart was inspired by music he
heard in his dreams. * Gorillas who've learned sign language have
been known to sign in their sleep!
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