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An unread, unused copy: no writing or highlighting, and no missing or damaged pages. Every book we sell is brand new, including our lowest-priced titles.
Whether you like bedtime or not, sleep is important. But why do we need to sleep? And what happens while we sleep? These questions and more will be answered in Rest Your Body, which also includes informative text, bright photos, a glossary, a read more section, kid-friendly Internet sites, and an index.