"Sleeping is as necessary as food and water for a person to survive and thrive, and kids need to know more about it. While experts still don't have all the answers, one fact they do know for certain is that sleep is not only important, it is essential to life! Physical, mental, and emotional health are all impacted by sleep. The world of sleep is filled with many unanswered questions and mysteries. While the exact physiological roles of sleep are still uncertain, researchers are confident that the body does a lot of valuable work while sleeping. The Mysteries and Science of Sleep outlines everything we know about sleep in clear...and sometimes humorous...language perfect for young readers"-- Provided by publisher.