Skip to main content Skip to search Skip to search

Children's Nonfiction Anatomy & Physiology

Zzz ...

The Most Interesting Book You'll Ever Read about Sleep

by (author) Trudee Romanek

illustrated by Rose Cowles

Kids Can Press
Initial publish date
Mar 2002
Anatomy & Physiology, Biology
  • Paperback / softback

    Publish Date
    Mar 2002
    List Price
  • Hardback

    Publish Date
    Mar 2002
    List Price

Add it to your shelf

Where to buy it

Out of print

This edition is not currently available in bookstores. Check your local library or search for used copies at Abebooks.

Recommended Age, Grade, and Reading Levels

  • Age: 9 to 14
  • Grade: 4 to 9


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!

About the authors

Trudee Romanek is the award-winning author of a dozen nonfiction books for young readers. Raising the Stakes is her first novel. Trudee lives with her family in Barrie, Ontario. For more information, visit

Trudee Romanek's profile page

Rose Cowles is the illustrator of the award-winning Puppies on Board. She has a big black dog named Rosie. She loves animals and can paint eleven puppies and a dog over and over again so that you can recognize them on every page. "I love painting," she says. "It keeps me happy and that's the best gift I can give to my kids." It's a pretty good gift for everyone else as well! Rose also illustrated The F Team for Orca. She lives in Victoria, British Columbia.

Rose Cowles' profile page


  • Short-listed, Red Cedar Book Award
  • Short-listed, Childrens' Choices, International Reading Association
  • Short-listed, Silver Birch Award, Ontario Library Association
  • Winner, Our Choice - Starred Selection, Canadian Children's Book Centre

Editorial Reviews

Highly recommended

CM Magazine

Curious children will find plenty to interest them and answer their questions.


The writing style is breezy and conversational, but focused enough to be complete and accurate.

School Library Journal

Each page of the book discusses an aspect of sleep (e.g., yawning and dreams) of topical interest, illustrates the concept with a cartoon, and has a box of short text that addresses the topic. This is a captivating and informative presentation. The book is filled with interesting facts such as details of animals' sleep; the loudest snore; the longest period of wakefulness; and the sleep habits of some famous people - Einstein, Churchill, and Edison.

Science Books & Films

Other titles by

Other titles by

Related lists