Quick Answer: Average sleep time by age ranges from 14-17 hours for newborns down to 7-8 hours for adults over 65. The National Sleep Foundation recommends 7-9 hours for adults aged 18-64, 8-10 hours for teenagers, and 9-12 hours for school-age children. These are not suggestions. Consistently sleeping outside these ranges is associated with measurable health consequences at every age.
In This Guide
Reading Time: 7 minutes
The question "how much sleep do I need?" changes with every decade of life. A newborn needs roughly twice the sleep of an adult. A teenager needs more than their parents, even though they seem fine on less. And seniors often sleep fewer hours than they should, not because they need less, but because their sleep architecture shifts in ways that make long, unbroken sleep harder to maintain.
Here is what the research says at each stage, and how the mattress under you should change alongside your sleep needs.
Complete Sleep Duration Chart
This chart reflects the 2015 National Sleep Foundation consensus guidelines (Hirshkowitz et al., Sleep Health), which remain the standard reference used by Health Canada, the American Academy of Sleep Medicine, and the Canadian Paediatric Society.
| Age Group | Age Range | Recommended Hours | May Be Appropriate | Not Recommended |
|---|---|---|---|---|
| Newborn | 0-3 months | 14-17 hours | 11-13 or 18-19 | Less than 11 or more than 19 |
| Infant | 4-11 months | 12-15 hours | 10-11 or 16-18 | Less than 10 or more than 18 |
| Toddler | 1-2 years | 11-14 hours | 9-10 or 15-16 | Less than 9 or more than 16 |
| Preschool | 3-5 years | 10-13 hours | 8-9 or 14 | Less than 8 or more than 14 |
| School-age | 6-13 years | 9-11 hours | 7-8 or 12 | Less than 7 or more than 12 |
| Teenager | 14-17 years | 8-10 hours | 7 or 11 | Less than 7 or more than 11 |
| Young adult | 18-25 years | 7-9 hours | 6 or 10-11 | Less than 6 or more than 11 |
| Adult | 26-64 years | 7-9 hours | 6 or 10 | Less than 6 or more than 10 |
| Older adult | 65+ years | 7-8 hours | 5-6 or 9 | Less than 5 or more than 9 |
The "May Be Appropriate" column is important. Some people genuinely function well at the edges of these ranges. But most people who claim they are fine on 5-6 hours are actually adapted to feeling tired, not actually rested. Research by Van Dongen et al. (2003, Sleep) showed that chronically sleep-restricted individuals lose the ability to accurately judge their own impairment.
Children: Why They Need More
Children do not just need more sleep because they are smaller. Their brains are building neural connections at a rate that will never happen again. During deep sleep, the brain consolidates learning, builds long-term memory pathways, and releases growth hormone that drives physical development.
The Canadian Paediatric Society recommends that children aged 5-13 get 9-11 hours of uninterrupted sleep per night. "Uninterrupted" is the key word. A child who gets 10 hours but wakes three times is not getting the same restorative benefit as one who sleeps 9 hours straight through.
What Disrupts Children's Sleep
- Screen time before bed. The Canadian 24-Hour Movement Guidelines recommend no screens within one hour of bedtime for children. Blue light suppresses melatonin more aggressively in children than in adults because their pupils are larger and their lenses are clearer.
- An outgrown mattress. A child who has been on the same twin mattress since age 3 may need a different firmness level by age 8 or 9 as their body weight and proportions change.
- Room temperature. Children's rooms are often the warmest in the house, especially in older Brantford homes where the thermostat serves the main floor. A small fan or cracked window can drop the room temperature enough to improve sleep onset.
Dorothy, Sleep Specialist: "Parents come in asking about mattresses for their kids and usually focus on softness. But for children, support is more important than cushioning. A growing spine needs a surface that keeps it aligned, not one that lets it sink. We usually recommend a medium-firm twin mattress for kids aged 5 and up."
8 min read
Teenagers: The Most Sleep-Deprived Group
Teenagers need 8-10 hours of sleep, but a 2014 survey by the Public Health Agency of Canada found that only about one-third of Canadian teens actually get the recommended amount on school nights. The rest are operating with a chronic sleep deficit that affects grades, mood, and decision-making.
The biological reason is a shift in circadian rhythm. During puberty, the brain's melatonin release shifts roughly 2 hours later. A teenager who naturally falls asleep at 11 p.m. and needs 9 hours of sleep should wake at 8 a.m., but school starts at 8:30 and the bus comes at 7:15. The math does not work.
Sleep and Academic Performance
A 2019 study in Science Advances (Okano et al.) tracked university students and found that both sleep duration and sleep quality predicted academic performance better than study time did. Students who consistently slept under 7 hours performed worse than students who studied less but slept more. This pattern holds for high school students as well. Sleep is not wasted time. It is when the brain files what was learned during the day.
For teens, the mattress matters more than parents might expect. A teenager sleeping on a hand-me-down mattress that is 10+ years old is likely experiencing reduced deep sleep from pressure points and inadequate support, exactly when their body needs deep sleep the most for growth and development.
Adults: The 7-Hour Minimum
The consensus is clear: adults aged 18-64 need a minimum of 7 hours of sleep per night. The range extends to 9 hours because individual sleep needs vary based on genetics, activity level, and health status.
What changes in adulthood is not how much sleep you need, but how hard it becomes to get it. Work stress, young children, irregular schedules, and chronic pain all compete with sleep. By age 40, many adults have settled into a pattern of 6 to 6.5 hours without realising they are chronically underslept.
How Canadians Actually Sleep
Statistics Canada's 2017 Canadian Health Measures Survey found that one in three Canadian adults sleep fewer than the recommended 7 hours per night. The problem is worse in shift workers, parents of young children, and adults with chronic pain conditions.
| Adult Age Group | Average Actual Sleep (Canada) | Recommended | Gap |
|---|---|---|---|
| 18-34 | 7.1 hours | 7-9 hours | At minimum, barely meeting |
| 35-49 | 6.8 hours | 7-9 hours | Below minimum |
| 50-64 | 6.9 hours | 7-9 hours | Below minimum |
| 65+ | 7.2 hours | 7-8 hours | Within range |
The 35-49 age group, the demographic most likely raising children and managing career demands, is the most sleep-deprived in Canada. This is also the group most likely to be sleeping on an aging mattress that they bought in their late 20s and never replaced.
Seniors: Less Sleep or Worse Sleep?
A common misconception is that older adults need less sleep. They do not. The National Sleep Foundation recommends 7-8 hours for adults 65 and over, nearly identical to younger adults.
What changes is sleep architecture. Research by Ohayon et al. (2004, Sleep) found that deep sleep (Stage 3) decreases steadily with age. By age 70, deep sleep may account for only 5-10% of total sleep time, compared to 15-20% at age 30. This means seniors spend more time in lighter sleep stages, which are easier to disrupt.
The practical result: older adults wake more frequently, have more difficulty returning to sleep, and often compensate by napping during the day, which further fragments nighttime sleep.
Mattress Considerations for Seniors
An older adult's mattress needs shift in two directions. Joint stiffness and arthritis make pressure relief more important (favouring softer surfaces at the shoulder and hip). But reduced muscle mass means the spine needs more structural support from the mattress (favouring firmer construction beneath the comfort layer).
This is exactly what zoned coil systems are designed for. The Restonic Luxury Silk and Wool with its 884 zoned coils provides softer support at pressure points and firmer support through the lumbar region. An adjustable bed base adds the ability to elevate the head and knees, which reduces pressure on the lower back and can ease acid reflux, a common sleep disruptor for older adults.
Brantford's Aging Population
Brantford's population skews slightly older than the Ontario average, with a growing number of residents over 65. Many are in homes they have lived in for decades, sleeping on mattresses that predate their retirement. If your mattress is from the same era as your working years, it has likely lost 30-40% of its original support. A mattress consult at Mattress Miracle takes 20 minutes and costs nothing. We will tell you honestly whether replacement would make a difference or whether other sleep factors are more likely the issue.
Mattress Needs Change With Age Too
Your ideal mattress at 25 is not your ideal mattress at 55. Body weight, flexibility, sleep position, and health conditions all evolve.
| Life Stage | Common Sleep Change | Mattress Priority |
|---|---|---|
| Child (5-12) | Growing body, active sleep | Medium-firm support, durable cover |
| Teenager (13-17) | Growth spurts, later circadian shift | Medium support, adequate length (consider twin XL) |
| Young adult (18-30) | Variable schedules, couples sharing beds | Motion isolation, medium comfort |
| Middle adult (30-55) | Back pain onset, weight changes | Targeted support, quality comfort layers |
| Senior (55+) | Joint stiffness, lighter sleep | Pressure relief + structural support, adjustable base |
Brad, Owner, 40+ years of experience: "I have sold mattresses to people who come back every 8-10 years, and they are never buying the same thing twice. At 30 they want firm. At 45 they want medium because their shoulders hurt. At 60 they want pressure relief but still need lumbar support. The body changes, and the mattress should change with it."
Shop This Topic at Mattress Miracle
Popular picks at Mattress Miracle:
- Restonic ComfortCare Dalton & Albany mattress
- Whitney double-sided bamboo mattress
- Somnia 3.0 neck support pillow
Or shop our mattress collection in our Brantford showroom.
Find Your Perfect Mattress at Mattress Miracle
We are a family-owned mattress store in Brantford, helping our community sleep better since 1997. Come try mattresses in person and get honest, no-pressure advice.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001Frequently Asked Questions
Is it true that some people only need 5 hours of sleep?
Genuine short sleepers exist, but they are extremely rare, estimated at less than 1% of the population. A 2019 study in Neuron identified a genetic mutation (ADRB1) linked to natural short sleep. For the other 99% of people, sleeping 5 hours regularly leads to measurable cognitive and metabolic impairment, even if they feel adapted to it.
Should naps count toward total daily sleep?
For children under 5, yes. Naps are a normal part of their sleep architecture. For adults, naps can supplement nighttime sleep but should not replace it. A 20-minute afternoon nap can restore alertness without interfering with nighttime sleep. Naps longer than 30 minutes or taken after 3 p.m. often make it harder to fall asleep at night.
Why does my teenager sleep until noon on weekends?
Their circadian rhythm has shifted later due to puberty. They are not being lazy. Their biology pushes sleep onset to 11 p.m. or later, and they need 8-10 hours. If school forces a 6:30 a.m. wake-up, they accumulate a sleep debt of 10+ hours by Friday. Sleeping until noon on Saturday is their body recovering. The real fix is an earlier weeknight bedtime, though that is easier said than done.
Does the mattress really matter more as you get older?
Yes. Younger bodies compensate for a poor sleep surface more easily. Strong muscles stabilise the spine even on a subpar mattress. As muscle mass decreases and joints stiffen with age, the mattress has to do more of the work. A 25-year-old can sleep on almost anything. A 60-year-old with arthritic hips will feel every deficiency in their mattress within the first hour of lying down.
Sources
- Hirshkowitz, M., et al. (2015). National Sleep Foundation's sleep time duration recommendations: methodology and results summary. Sleep Health, 1(1), 40-43.
- Van Dongen, H.P., et al. (2003). The cumulative cost of additional wakefulness. Sleep, 26(2), 117-126.
- Ohayon, M.M., et al. (2004). Meta-analysis of quantitative sleep parameters from childhood to old age. Sleep, 27(7), 1255-1273.
- Okano, K., et al. (2019). Sleep quality, duration, and consistency are associated with better academic performance. Science Advances, 5(10).
- Statistics Canada. (2017). Duration and quality of sleep among Canadians aged 18 to 79. Health Reports, 28(9).
Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle , 441½ West Street, Brantford, ON · (519) 770-0001
Hours: Monday–Wednesday 10am–6pm, Thursday–Friday 10am–7pm, Saturday 10am–5pm, Sunday 12pm–4pm.