130,000+ Books, Games & Puzzles in-stock 🇳🇿

Come visit us this weekend!🚀 Auckland Bookstore • Open 7 days, 8:30am–5pm

Why Do We Sleep?

By Cathy Evans
0.0 (0 reviews)
Brief Description
Everything you ever wanted to know about sleep but were too exhausted to ask.We spend around a third of our lives sleeping. But what actually happens during those hours? This book takes you on a fascinating journey through the land of nod and out the other... Read More
Format: Hardback
$3499
OVERNIGHT NZ-WIDE DELIVERY

Found a better price? Request a price match

Book Hero Magic formatted this description to make it easier to read. While it's new and still learning, it may not be perfect - your feedback is welcome! Description

Everything you ever wanted to know about sleep but were too exhausted to ask.

We spend around a third of our lives sleeping. But what actually happens during those hours? This book takes you on a fascinating journey through the land of nod and out the other side.

• 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.

Book Details

INFORMATION

ISBN: 9781800660588

Publisher: Cicada Books

Format: Hardback

Date Published: 24 April 2025

Country: United Kingdom

Imprint: Cicada Books

Illustration: Illustrated in colour throughout

Contributors:

  • Illustrated by Polina Plavinskaia
  • Illustrated by Polya Plavinskaia

Audience: Children

DIMENSIONS

Width: 230.0mm

Height: 285.0mm

Weight: 540g

Pages: 48

Collections

Best Sellers at Book Hero Cathy Evans Children's Books Children’s & Teenage Non-Fiction Children’s, Teenage and Educational In Stock Books In stock Children's Books In Stock Kid's Books Penguin Books

About the Author

Cathy Evans is a vet and a writer living in Bournemouth with two boys and a menagerie of animals. She is the author of Cat Eyes and Dog Whistles (Cicada, 2021) and Mama Mammals (Cicada, 2023).

Polya Plavinskaia is a London-based illustrator and art director. She has designed and illustrated dozens of books for publishers including Samokat, Quarto and Bloomsbury. She was a 2023 winner of the Bologna Bookfair Illustrators' Exhibition.

Also by Cathy Evans

View all
  • Cat Eyes and Dog Whistles
    With bold, bright illustrations by award-winning illustrator, Becky Thorns, this is a marvellous science/biology book that will get kids thinking about how their bodies interact with and make sense of the world around them. Praise for Cat Eyes and Dog Whistles ''While the science is clear and accurate, there is also room for gentle humour, as we explore ear wax,...
    By Cathy Evans
    Hardback
    $3699
    Available
    Ships in 4-6 weeks
  • The Hospital for Mythological Creatures
    The Hospital for Mythological Creatures
    A spoonful of imagination helps the medicine go down! One Wednesday morning, Dani at Emergency Services takes a call: there's been a car crash. Daisy's arm is broken, Lisa's got a head injury, and poor Mr. Von Thunderhoof has chest pains. They're rushed by ambulance to the Hospital for Mythological Creatures, where a team of nurses, doctors, radiographers, and even...
    By Cathy Evans
    Hardback
    $3699
    Available
    Ships in 4-6 weeks
  • Mama Mammals
    Longlisted for the SLA Information Book Awards 2024 "Beautifully illustrated, this sensitively written guide through the cycles of reproduction and birth in mammals shows our links to fellow mammals in a charming and accessible way." - The School Librarian Forget the birds and the bees, let's learn about how mammals make babies and look after them! This beautifully presented science...
    By Cathy Evans
    Hardback
    Sold Out

More from Children's Books

View all
  • New Release
    Gruffalo Granny
    The brand new Gruffalo picture book from Julia Donaldson and Axel Scheffler. The Gruffalo said to his daughter one day, "Your Gruffalo Granny is coming to stay." Return to the deep dark wood with the first new Gruffalo story in over 20 years, and meet Gruffalo Granny as she visits the Gruffalo family. This fresh and exciting new Gruffalo adventure...
    By Julia Donaldson
    Hardback
    $2499
    Elsewhere:
    $3000
    (2)
    In Stock
    Ships tomorrow
  • Detective Beans Colouring Club
    New Release
    Detective Beans Colouring Club
    Help Detective Beans solve the case of the missing colours! Join the Colouring Club now! Join the Detective Beans Colouring Club! Inside you'll find 40 removable colouring pages featuring scenes from all over Cat Town. Filled with all the characters you know and love from the Detective Beans graphic novels like Biscuits, Beans' mum, Mr Brickle, Bear, Detective Baby Bird...
    By Li Chen
    Paperback
    $1799
    Elsewhere:
    $2100
    In Stock
    Ships tomorrow
  • Wahine
    New Release
    Wahine
    From a majestic mermaid to a clay woman, the creator of glaciers to the mother of gardening, discover powerful wahine and how their stories shaped the world around us. Wahine introduces readers to twelve purakau of brave, bold, and inspiring women of Aotearoa. A beautifully illustrated collection that will delight the whole whanau, from award-winning illustrator Isobel Joy Te Aho-White....
    By Isobel Joy Te Aho-White
    Hardback
    $3199
    Elsewhere:
    $3999
    In Stock
    Ships tomorrow
  • New Release
    The Sixth Faction
    Beatrice Prior stands on the brink of a decision every person in her world must make: five factions, five futures, five lives. She has a plan: she's going to make the bravest choice, and leave Abnegation behind to join Dauntless, even though it means leaving her family behind. But when tragedy strikes at her Choosing Ceremony, everything changes—her world, her...
    By Veronica Roth
    Paperback
    $2999
    Elsewhere:
    $3499
    In Stock
    Ships tomorrow
  • New Release
    Lottie Brooks’s Twelve Disasters of Christmas
    From hilarious MEGA bestselling author, Katie Kirby, comes a new story collection from the world of Lottie Brooks! But this time... it's not about Lottie! From hilarious MEGA bestselling author, Katie Kirby, comes a new story collection from the world of Lottie Brooks! And it's CHRISTMAS! In The Completely Chaotic Christmas of Lottie Brooks we spent the holiday season with...
    By Katie Kirby
    Paperback
    $1799
    Elsewhere:
    $2100
    In Stock
    Ships tomorrow
  • Matihe! Achoo! Matihe! Achoo!
    New Release
    Matihe! Achoo!
    What happens when a grumpy tupua has to sneeze? Matihe! Achoo! is a bilingual story about the tupua Mataoho and his connection to the volcanoes of Tāmaki Makaurau, Auckland. It comes with an action song to engage young readers! He pūrākau e pā ana ki a Mataoho me ngā puia o Takamaki Makaurau. He tupua pukukino a Mataoho e noho...
    By Qiane Matata-Sipu
    Paperback
    $1899
    Elsewhere:
    $2100
    In Stock
    Ships tomorrow
  • The Sweet As Looky Book
    The Sweet As Looky Book
    Can you find all the chocolate fish? Is it possible for kiwi to fly? Can you spot the difference? See Aotearoa New Zealand through the eyes of award-winning artist Donovan Bixley in The Sweet As Looky Book. Use your finest skills to seek out pirates in the Bay of Islands and birds in Rakiura Stewart Island. Get in a car...
    By Donovan Bixley
    Hardback
    $2299
    Elsewhere:
    $2799
    Backorder
    Ships late October
  • Pocket Observology
    New Release
    Pocket Observology
    Pocket Observology is a practical field guide designed for those who love to explore and understand the natural world around them. Slip this guide out of your pocket to identify, measure, compare, or find clues to the things you encounter every day in nature. This pocket guide is a useful tool and a fun reminder of how to engage with...
    By Giselle Clarkson
    Paperback
    $2399
    Elsewhere:
    $2799
    In Stock
    Ships tomorrow
  • New Release
    The Day of the Dinosaur Disaster
    Angry anacondas, blizzarding blobs, carnivorous cactuses ... what kind of twisted curse will Glam-Evil think up this time?!Only it's not just Glam-Evil's curse the gang needs to worry about; they've got a few other problems, too. Swooping Pteranodons, a hungry T-Rex, a missing mother, and ... is that ... an ASTEROID?!Join MILES AND JONES as they face their biggest challenge...
    By Sam Smith
    Paperback
    $1400
    Elsewhere:
    $1499
    In Stock
    Ships tomorrow
  • New Release
    The Neverfear
    A world of richly-imagined wonder Cressida Cowell It’s the Midsummer Feast on the Islet of Glimt and on this magical moonlit evening, the word on everyone’s lips is bandits. Reports of masked men burning villages are spreading throughout the Archipelago, but worse is still to come: Christopher and Anya are ambushed and one of the people they love most is...
    By Katherine Rundell
    Paperback
    $1999
    Elsewhere:
    $2299
    In Stock
    Ships tomorrow
  • New Release
    Mari the Unwonderful Witch
    A charming, cosy and thought-provoking tale about a wonderfully unconventional little witch, by bestselling author of BUTTER, Asako Yuzuki. Perfect for fans of WICKED, KIKI'S DELIVERY SERVICE, and THE HATMAKERS series by Tamzin Merchant - and anyone who likes an enchanting adventure with just a hint of mischief. Mari the Unwonderful Witch introduces us to Mari, an eleven-year-old witch who...
    By Asako Yuzuki
    Paperback
    $1999
    Elsewhere:
    $2400
    In Stock
    Ships tomorrow
  • New Release
    Animalia 40th Anniversary Edition
    A beautiful, foiled collector's edition to celebrate the 40th anniversary of Graeme Base's classic and bestselling Australian picture book, Animalia. Embark on a fantastical alphabetic adventure where each turn of the page unveils a rich tapestry of intricate illustrations tied to a unique letter of the alphabet. More than 5 million copies sold worldwide Children's Book Council of Australia (CBCA)...
    By Graeme Base
    Hardback
    $2999
    Elsewhere:
    $3500
    In Stock
    Ships tomorrow

Why buy from us?

Book Hero is not a chain store or big box retailer. We're an independent 100% NZ-owned business on a mission to help more Kiwis rediscover a love of books and reading!

Service & Delivery

Service & Delivery

Our warehouse in Auckland holds over 100,000 books, toys, board games and puzzles in-stock so you're not waiting for your order to arrive from overseas.

Auckland Bookstore

Auckland Bookstore

We're primarily an online store, but for your convenience you can pick up your order for free from our bookstore, which is right next door to our warehouse in Hobsonville.

Our Gifting Service

Our Gifting Service

Books make wonderful thoughtful gifts and we're here to help with gift-wrapping and cards. We can even send your gift directly to your loved one.

Children's Books lists from the team

Explore our curated lists from our heroes to find your next read!

The Latest at Book Hero

View all