★Sleep is lavishly illustrated and comes packed with facts, diagrams, and answers to the mysterious state we spend onethird of our lives doing: Sleep!
★Everything we know about sleep in clear—and sometimes humorous—language, perfect for young readers
★Very few books available on this important topic
★Includes a cross-cultural look at the ways and places human beings sleep around the world and throughout history

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.
Topics covered include…
the four stages of sleep (including REM sleep and Deep Sleep), their purposes, and what happens to the body during each
sleep disorders, such as sleep apnea and narcolepsy
how various animals sleep
where people sleep and the types of bedding used throughout the world
and more…

Wendy Bjazevich is the author of Exoplanets; Sleep: A Kid's Guide to the Science of Slumber; and the Green and Small series. A science enthusiast, she received a B.S. from Brigham Young University in sociology and health education and a Master of Forensic Sciences from George Washington University. Wendy enjoys spending time with her husband and six children.

Juliana Eigner was born in São Paulo and currently lives in Ubatuba, a small coastal town in Brazil. Since graduating with a degree in design Juliana has experimented with many different types of art, including jewelry, ceramics, porcelain, collage, and painting. In 2006 she became enchanted by surface patterns and its countless applications. Over the years, she has expanded her research to illustration. Juliana is in love with and inspired by nature. When she had her daughter, her work naturally started to reflect childhood, through elements of color and emotion. Nowadays, Juliana usually develops authorial work in both digital and manual art, ranging from clothes or chocolates to books or walls.