Page 233 - DK Children's Encyclopedia

Sleep SEE ALSO

▸ ▸ Brain p.45
▸ ▸ Eating
Every night we sleep and our bodies rest, repair, and grow. pp.104–105
While we sleep our brains sort through the information ▸ ▸ Hibernation
gathered from our senses and some of it is deleted and p.129

some is stored as memories. We need sleep to stay ▸ ▸ Human body
p.130
fit and healthy. ▸ ▸ Sickness p.225

Sleep patterns
Our sleep follows a pattern of
different stages. You go through
each stage several times every night.

8 p.m. 9 p.m. 10 p.m. 11 p.m. 12 a.m. 1 a.m. 2 a.m. 3 a.m. 4 a.m. 5 a.m. 6 a.m. 7 a.m.

Awake Dreaming Light sleep Shallow sleep Deep sleep
When we wake up, We dream when we’re Breathing slows We move around This is when our
we become alert close to waking. We down but the brain is more during shallow bodies are growing
and aware of our have three to seven still active and you sleep than during and repairing muscle,
surroundings. dreams a night. can wake up easily. deep sleep. tissue, and bones.

Why do we Memory Energy
sleep? Our brain deletes useless If we don’t get enough You will
Sleep is important information and stores sleep, we lack energy spend one-third
and want sugary food.
more important things
because without it our while we sleep.
brain and body slowly of your life asleep.
stop working. This is around
Healing Growth
Our bodies heal better and Our bodies grow and repair 30 years
faster when we get plenty muscles and bones while in total!
of solid sleep. we are in a deep sleep.

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