Sleep by Age: Kids, Teens, Adults & Older Adults (2026)

This article is for informational purposes only. If you’re concerned about a child’s sleep patterns or your own sleep as you age, your GP or a paediatrician can provide personalised guidance.

Why Sleep Needs Change With Age

Sleep isn’t one-size-fits-all, and it isn’t fixed across your lifetime. A newborn sleeps sixteen hours. A teenager can barely manage eight. A sixty-year-old might lie in bed for seven hours but only sleep for five and a half. These shifts aren’t random — they’re driven by brain development, hormone changes, lifestyle demands, and the gradual rewiring of your internal clock as you age.

Understanding what’s normal for your age group helps you stop comparing your sleep to someone in a completely different stage of life — and focus on what actually matters for where you are right now.

Sleep for Kids (Children)

How Much Sleep Kids Need

Children between 3 and 5 generally need 10–13 hours of sleep per day (including naps). School-aged children (6–12) typically need 9–12 hours per night. These numbers look generous compared to adult sleep needs, but they reflect the enormous amount of brain development, physical growth, and memory consolidation happening during childhood.

Common Sleep Challenges for Kids

Bedtime resistance, fear of the dark, nightmares, and inconsistent routines are the usual suspects. Screen exposure before bed is an increasing issue — children’s brains are even more sensitive to blue light’s effects on melatonin than adults’. A consistent bedtime routine with a screen cutoff at least an hour before sleep makes a measurable difference for most children. For more on how screens affect sleep, see our guide on screens, blue light, and sleep.

Sleep for Teens

How Much Sleep Teens Need

Teenagers need 8–10 hours per night, but most get significantly less. Part of this is biological: during puberty, the circadian rhythm shifts later — teens genuinely aren’t sleepy until later at night, making early school starts a structural mismatch with their biology. Part of it is behavioural: screens, social media, homework, and social pressure all push bedtimes later.

Common Sleep Challenges for Teens

The combination of a late-shifted body clock and early school alarms creates chronic sleep debt for many teenagers. Weekend “catch-up sleep” — sleeping until noon on Saturday — feels necessary but actually makes the Monday morning wake-up even harder by pushing the circadian clock further out of alignment. Helping teens keep weekend wake times within an hour or two of school-day times is one of the most impactful changes a family can make.

Sleep for Adults

How Much Sleep Adults Need

Most adults need 7–9 hours of sleep per night. The “I only need five hours” claim is almost always a story people tell themselves rather than a biological reality — true short sleepers (who function well on less than six hours) make up less than 1% of the population. For everyone else, consistently getting less than seven hours is associated with higher rates of chronic disease, cognitive decline, weight gain, and mood problems.

Common Sleep Challenges for Adults

Work stress, family responsibilities, irregular schedules, caffeine dependence, alcohol use, and screen habits are the most common adult sleep disruptors. The good news is that these are all modifiable — and the sleep cluster on this site covers each one in detail: sleep hygiene, caffeine and alcohol, screens and blue light, sleep and mental health, and sleep and exercise.

Sleep for Older Adults

How Much Sleep Older Adults Need

Adults over 65 still need roughly 7–8 hours of sleep, but the architecture of sleep changes with age. Deep sleep decreases, light sleep increases, and waking during the night becomes more common. This doesn’t necessarily mean older adults need less sleep — it means they often get less despite still needing it, and the difference shows up in daytime energy, cognitive sharpness, and immune function.

Common Sleep Challenges for Older Adults

Earlier bedtimes and earlier waking (the circadian clock tends to shift earlier with age), more frequent nighttime waking, medications that affect sleep, chronic pain, nocturia (needing to use the bathroom at night), and sleep disorders like sleep apnoea and restless legs syndrome are all more common in older adults. Many of these are treatable or manageable, but they’re often accepted as “just part of getting old” when they don’t have to be.

If sleep problems are affecting your daytime functioning regardless of age, our guide on insomnia vs. poor sleep can help you figure out whether it’s worth seeing your doctor.

Frequently Asked Questions

How much sleep do kids need?

Children aged 3–5 need about 10–13 hours (including naps). School-aged children (6–12) need 9–12 hours per night. Consistent bedtime routines and limited screens before bed support better sleep at this age.

How much sleep do teens need?

Teenagers need 8–10 hours per night, but most get less due to late-shifted circadian rhythms, school start times, and screen use. Keeping weekend wake times close to weekday times helps prevent further disruption.

How much sleep do adults need?

Most adults need 7–9 hours. Consistently getting less than seven is linked to increased health risks. The exact amount varies by individual, but very few people genuinely function well on less than six hours.

How much sleep do older adults need?

Older adults still need about 7–8 hours, but sleep becomes lighter and more fragmented with age. This makes good sleep hygiene and addressing medical sleep disruptors more important, not less.

Why do sleep patterns change with age?

Changes in brain development, hormone production (particularly melatonin and growth hormone), circadian rhythm timing, and overall health all contribute. The circadian clock shifts later during adolescence and earlier in older adulthood, which partly explains different natural sleep-wake preferences at different ages.

What are the most common sleep problems for each age?

Children: bedtime resistance, nightmares, screen-related delays. Teens: late sleep onset, chronic sleep debt from early school starts. Adults: stress, caffeine, alcohol, screens, irregular schedules. Older adults: lighter sleep, more waking, medications, pain, and sleep disorders like apnoea.

Age-Specific “Better Sleep” Tips

For kids: Set a consistent bedtime with a calming routine (bath, story, dim lights). Cut screens at least an hour before bed. Keep the bedroom dark and cool.

For teens: Aim for a consistent wake time, even on weekends. Reduce phone use in the hour before bed. If possible, advocate for later school start times — the science supports it.

For adults: Build a sleep hygiene routine you can sustain. Address caffeine timing, screen habits, and stress management. Prioritise sleep the same way you prioritise exercise and nutrition.

For older adults: Stay physically active during the day. Get morning light. Keep naps short (under 30 minutes) if you nap at all. Talk to your doctor about any medications that might be affecting sleep, and don’t dismiss persistent sleep problems as inevitable.

For the full picture on sleep at any age, start with our complete guide to sleep.

Sleep for Different Ages: How Much Each Group Needs and Why It Changes

Why Sleep Needs Change With Age