Health and Body · Topic 3 of 59

Sleep

Kids aged 9–12 need about 9–12 hours of sleep. Sleep helps your brain learn and your body grow.

💡 Fun fact

Your brain stays active while you sleep, sorting memories.

All about Sleep

Sleep is when your body repairs itself and your brain organises what you learned during the day. Children aged 9 to 12 usually need around 9 to 12 hours of sleep each night. Not getting enough can make you tired, grumpy and less able to concentrate.

A regular bedtime, a calm routine before bed and a dark, quiet room help sleep come more easily. Screens can keep your brain alert, so it helps to switch them off for an hour before bed.

🎮 Try it yourself!

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Real-life uses of Sleep

Keeping a regular bedtime on school nights
Winding down with a book instead of a tablet
Feeling ready to learn and play the next day

Frequently asked questions about Sleep

Why do I dream?

Dreams happen mostly during REM sleep, when the brain is very active. Scientists are still learning exactly why we dream.

What should I do if I cannot sleep?

Try a quiet activity, slow breathing and a calm routine. If sleep problems last a long time, tell a parent or doctor.

Can I catch up on sleep at the weekend?

Some extra rest can help, but a regular schedule is better for your body clock.