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Healthy Sleep

Across
When you can't fall asleep this is called ____
In the morning, your eyes and brain are signalled that it is time to wake up by _______
Our brain makes a chemical that makes us sleepy called ____
Five or six times a night, you go through one deep ____
Your body needs rest at night, but while you sleep it is still ______
During stage 3 and 4 of dreaming you are in a ______ sleep.
Down
To help your muscles and bones grow and to keep you healthy, sleep renews and strengthens your ____
In a _____ your heart rate goes up a lot.
You need 7-9 hours of _____
____ will keep you awake all night.
A full night of sleep helps you stay active all day by giving you enough ___
Rapid eye movement sleep is the stage when we _____
To help you concentrate, solve problems and learn, sleep refreshes your ______
Each cycle of sleep has ____ stages
Your ____ twitch left to right when you are dreaming.