Life-Ready SocietyEst. 2026
Nutrition and a Healthy Body · Lesson 7 of 9 · 11 min

Sleep for teenagers

Sleep affects your focus, learning, mood and safety. Teenagers need more than most people think, and your body clock naturally shifts later, which makes good habits even more useful.

How much sleep you need

  • The American Academy of Sleep Medicine (AASM) recommends that teenagers aged 13 to 18 sleep 8 to 10 hours per 24 hours on a regular basis.
  • Cleveland Clinic notes that up to half of teens do not get enough, and many get only about 6 or 7 hours.
  • Not getting enough sleep is linked to problems with attention, behaviour and learning, and to a higher risk of accidents, injuries and low mood.
  • If you are 18 or over, adult sleep needs apply, but the habits below are the same.

Your shifting body clock

  • Teenagers have a natural delay in their circadian rhythm, so feeling awake late at night is partly biology, not laziness.
  • Early school starts then cut into sleep, which is why many teens feel tired in the morning.
  • Going to bed and waking at about the same time every day, including weekends, helps your body clock settle.
  • Long weekend lie-ins do not fully make up for lost weekday sleep.

Screens and the hour before bed

  • The NHS suggests not using phones, tablets or computers for an hour before bed.
  • Use the time for something calm: reading, a shower, light stretching, or breathing exercises.
  • Charge your phone outside your bedroom or out of reach so notifications do not wake you.
  • If worries keep you awake, write tomorrow's tasks on paper before bed to clear your mind.

Caffeine, exercise and your room

  • Tea, coffee, cola and energy drinks contain caffeine, which keeps you alert. EFSA notes that 100mg of caffeine can affect sleep in some adults when taken close to bedtime.
  • Swap caffeinated drinks in the evening for water, warm milk or herbal tea.
  • Being active during the day helps sleep, but if late workouts keep you awake, move them earlier.
  • Aim for a room that is quiet, dark and cool. In the Gulf, a fan or air conditioning, blackout curtains or an eye mask can help.

When to get help

  • If you regularly cannot fall asleep, wake many times, snore loudly, or feel exhausted despite enough time in bed, talk to a doctor.
  • Low mood and sleep problems often go together. Talking to a trusted adult or doctor about either is a good step.
  • Avoid using energy drinks or extra coffee to push through tiredness; it can make the next night's sleep worse.

Practise in real life

Tick each one off when you have done it.

  • For one week, write down your bedtime, wake time and how you feel each morning. Work out your average hours.
  • Choose a 'screens off' time an hour before bed and try it for five nights.
  • Note the time of your last caffeinated drink each day this week, and try moving it earlier.

Remember

  • Teens need 8 to 10 hours of sleep (AASM).
  • A consistent bedtime and wake time, even at weekends, helps your body clock.
  • Put screens away for the last hour before bed.
  • Avoid caffeine in the evening; keep your room dark, quiet and cool.
Note: The NHS teen sleep tips page had been removed when this lesson was written, so hours come from the AASM (US) and Cleveland Clinic; general sleep habits come from NHS Every Mind Matters, which is written for all ages.

Check yourself

1. How much sleep does the AASM recommend for teenagers aged 13 to 18?

2. Why do many teenagers feel awake late at night?

3. How long before bed does the NHS suggest putting away phones and computers?

4. Which bedroom conditions help sleep?

5. What does EFSA say about 100mg of caffeine near bedtime?