Everything you ever wanted to know about sleep but were too exhausted to ask.
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¿ What are circadian rhythms and how do they affect our energy levels throughout the day?
¿ What are dreams for and how do they happen?
¿ What are the different stages of sleep?
¿ Do animals experience sleep the same way we do?
With clear texts and bright, distinctive illustrations, this is a great introduction to a subject that has fascinated us since ancient times, and an engaging tie-in to biology and natural sciences curriculums.