
Sleep is vital for both the mental and physical development of children. It gives their bodies a rest and allows them to prepare for the next day. Sleep is the time for restoration and for children's bodies to recharge and retain the information they have learned throughout the day.
| Characteristics | Values |
|---|---|
| Development | Sleep plays a vital role in both mental and physical development. |
| Restoration | Sleep is when the body recharges and retains information learned during the day. |
| Energy | During deep non-REM sleep, the body's energy is restored. |
| Growth | Growth and repair occur during sleep. |
| Brain development | Important brain development hormones are released during sleep. |
| Immune system | Sleep deprivation stifles the immune system. |
| Mood | Sleep deprivation negatively affects mood. |
| Behaviour | Sleep deprivation can hinder a child's behaviour and performance in school. |
| Weight management | Lack of sleep can impact weight management. |
| Intellectual functioning | Lack of sleep can impact intellectual functioning. |
| Mental health | Lack of sleep can impact mental health. |
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What You'll Learn

Sleep helps children's bodies to recharge and retain information
Sleep plays a vital role in a child's development. Children need a lot of sleep – eight to 10 hours a night for teenagers, nine to 11 hours for school-aged kids, and 10 to 14 hours for preschoolers and toddlers. Sleep is the time for restoration and for children's bodies to recharge and retain the information they have learned throughout the day. During deep non-REM sleep, the body's energy is restored, growth and repair occur, and important brain development hormones are released. Sleep deprivation stifles the immune system, negatively affects mood and behaviour, and can hinder a child's performance in school.
Sleep is the time when the body regenerates itself. If children don't get enough sleep, their bodies don't have the chance to recuperate. In older kids, insufficient sleep presents as chronic fatigue, falling asleep during the day, difficulty concentrating or performing at peak, and even difficulty regulating emotions.
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Sleep deprivation can negatively affect mood and behaviour
Sleep deprivation stifles the immune system and can hinder a child's performance in school. In older children, insufficient sleep presents as chronic fatigue, falling asleep during the day, difficulty concentrating or performing at peak, and even difficulty regulating emotions.
Children need a lot of sleep: eight to ten hours a night for teenagers, nine to eleven hours for school-aged kids, and ten to fourteen hours for preschoolers and toddlers. Unfortunately, up to 50% of kids in the U.S. don't get as much as they need.
Sleep plays a vital role in development, so it's especially important for kids to get enough. They'll need less and less of it as they grow, but even into their teens, they need more than nine hours every night.
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Sleep is important for children's physical development
Sleep is the time for restoration and for children's bodies to recharge and retain the information they have learned throughout the day. During deep non-REM sleep, the body's energy is restored, growth and repair occur, and important brain development hormones are released. Sleep deprivation stifles the immune system, negatively affects mood and behaviour, and can also hinder a child's performance in school.
Kids need a lot of sleep: eight to 10 hours a night for teenagers, nine to 11 hours for school-aged kids, and 10 to 14 hours for preschoolers and toddlers. Unfortunately, up to 50% of kids in the U.S. don't get as much as they need. And the lack of sleep can impact weight management, intellectual functioning, mental health and even behaviour.
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Sleep helps children's intellectual functioning
Sleep is vital for children's development, and they need a lot of it. While the amount of sleep they need will decrease as they grow, even teenagers need more than nine hours every night. Sleep is the time for restoration, when the body's energy is restored, growth and repair occur, and important brain development hormones are released.
Insufficient sleep can present as chronic fatigue, falling asleep during the day, and difficulty concentrating. It can also negatively affect mood and behaviour, and hinder a child's performance at school.
"The established thinking is that sleep is the time the body regenerates itself," says Ricky Mohon, MD, an expert in sleep medicine at Children's Hospital Colorado. "So, if you’re not getting enough, those recuperative things don’t happen as effectively."
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Sleep is important for children's mental health
Sleep deprivation can negatively affect a child's mood and behaviour, and can hinder their performance at school. In older children, insufficient sleep can present as chronic fatigue, difficulty concentrating, and difficulty regulating emotions.
Sleep gives the body a rest and allows it to prepare for the next day. It's like giving your body a tiny vacation.
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Frequently asked questions
Sleep is vital for both mental and physical development. It's when the body restores its energy, repairs itself and releases important brain development hormones.
It depends on their age. Teenagers need eight to 10 hours a night, school-aged kids need nine to 11 hours, and preschoolers and toddlers need 10 to 14 hours.
Lack of sleep can impact weight management, intellectual functioning, mental health and behaviour. It can also hinder a child's performance at school.
Signs of sleep deprivation in older children include chronic fatigue, falling asleep during the day, difficulty concentrating and regulating emotions.
Make sure they're getting the recommended amount of sleep for their age. You could also try establishing a bedtime routine, making sure their bedroom is cool, dark and quiet, and limiting screen time before bed.











































