How much sleep do you need by age?

Updated 2026-11-05

Most adults need at least 7 hours of sleep per day, while children and teenagers need more because their bodies are still developing. The right amount varies by age, activity level, health, and individual need, but regularly getting less than your body needs can affect memory, mood, immunity, and safety.

How much sleep is recommended by age?

The following ranges come mainly from sleep-duration recommendations developed by the American Academy of Sleep Medicine. The ranges are guidelines, not a precise measurement of what every individual person requires on every night.

Age	Recommended sleep per day	Important details
Birth to 3 months	14–17 hours	Sleep may occur in several periods
4 to 12 months	12–16 hours	Includes naps
1 to 5 years	10–14 hours	Includes naps
6 to 12 years	9–12 hours	May include naps, especially for younger children
13 to 18 years	8–10 hours	Teenagers often need more during growth spurts
18 to 60 years	At least 7 hours	Some adults function best with 8–9 hours
61 years and older	7–9 hours through age 64; 7–8 at 65 and older	Older adults still need adequate sleep

These recommendations cover total sleep in a 24-hour period. For children and teenagers, daytime naps count toward the daily total. Sleep needs can also change temporarily during illness, recovery from injury, pregnancy, demanding work periods, or other changes in physical activity.

How much sleep do adults need?

For most adults aged 18–60, the recommended minimum is 7 hours in a 24-hour period, according to the Centers for Disease Control and Prevention. Eight or nine hours may be better for someone who remains sleepy, has an active schedule, trains intensely, is pregnant, or is recovering from illness.

The CDC also recognizes that a short night can be compensated for by a longer sleep period, but repeatedly staying below the recommended amount may create an ongoing sleep debt. Pay attention to how you feel during the day rather than treating a single night as a personal test. Persistent drowsiness despite enough time in bed can point toward a sleep-quality problem rather than simply needing more hours.

What symptoms suggest you are not sleeping enough?

Insufficient sleep commonly causes daytime sleepiness, slowed reaction time, difficulty concentrating, and trouble remembering or learning new information. You may also notice irritability, lower stress tolerance, reduced motivation, changes in appetite, or a general feeling that your energy is “running on empty.”

The National Heart, Lung, and Blood Institute explains that sleep deprivation can reduce attention, impair judgment, and contribute to workplace, driving, and relationship problems. Even one severely restricted night can increase errors and reduce performance, while chronic deprivation can compound those effects.

Unlike ordinary tiredness, sleep-related breathing problems can cause loud snoring, choking or gasping during sleep, restless sleep, morning headaches, or feeling unrefreshed despite adequate time in bed. These symptoms are not proof of a particular disorder, but they are reasons to discuss the pattern with a clinician. The National Heart, Lung, and Blood Institute’s sleep apnea overview describes how repeated interruptions in breathing can disrupt sleep and oxygen levels.

Does sleep need change as you age?

Adult sleep needs usually remain fairly stable through middle age rather than dropping dramatically. From age 61 onward, recommendations narrow to roughly 7–9 hours through age 64 and 7–8 hours at 65 and older. These figures should not be used to excuse chronic sleep loss.

Older adults may sleep less at night and wake more often, but frequent waking does not necessarily mean they require less sleep. Changes in health, medications, nocturia, pain, or sleep disorders can fragment sleep. Similarly, teenagers may appear tired because delayed sleep timing and early school or work schedules create a mismatch between their biological sleep patterns and required wake times.

What happens when sleep stays inadequate?

Over time, ongoing sleep loss can affect nearly every system. It may weaken immune function, disrupt hormone regulation, increase the feeling of hunger, raise blood pressure, and make weight, glucose, and cardiovascular health harder to manage. Psychological effects can include irritability, anxiety, low mood, impaired concentration, and increased risk of mistakes.

The MedlinePlus guide to sleep disorders distinguishes ordinary sleep problems from conditions that repeatedly interfere with sleep quality or daytime functioning. Insomnia, sleep apnea, restless legs syndrome, circadian rhythm disorders, and certain medical or psychiatric conditions can all affect sleep. These conditions are not interchangeable, and symptoms alone cannot establish which one is present.

If inadequate sleep affects driving, work performance, or safety, treat that as a priority rather than waiting for a routine appointment. Do not rely on caffeine alone to overcome chronic sleepiness, because it may mask the extent of the problem without correcting the underlying cause.

How should you choose a sleep target and improve sleep?

Use the age range as your starting point. If you are an adult, begin with at least seven hours and pay attention to daytime alertness. Add time if you feel sleepy, ill, pregnant, physically active, or unable to perform tasks safely.
Track sleep for about two weeks. Record when you go to bed, how long you are actually asleep, awakenings, naps, and daytime sleepiness. A sleep diary can reveal whether the problem is insufficient duration, poor-quality sleep, or an irregular schedule. The Sleep Education Society provides practical guidance for assessing sleep patterns.
Protect a consistent sleep window. Go to bed and wake at similar times, including weekends. This supports the body’s internal clock and may be especially helpful for shift workers, although adjustments need to be planned carefully.
Make the sleep environment supportive. Keep the room dark, quiet, and comfortably cool. Avoid relying on prolonged naps to correct nighttime sleep loss, and reduce late caffeine and evening screen exposure if they interfere with falling asleep.
Look for obstacles that need clinical attention. Persistent insomnia, snoring with gasping, frequent awakenings, or excessive daytime sleepiness should not be managed only with lifestyle changes. A primary care clinician can assess the problem and refer you to a sleep specialist when appropriate.

When to see a doctor

You regularly feel dangerously sleepy or drowsy while driving, operating machinery, working at height, or caring for children.
Your partner reports loud snoring, choking, gasping, brief pauses in breathing, or sudden movements during sleep.
You cannot fall asleep or stay asleep despite adequate opportunity and reasonable sleep habits, or insomnia substantially disrupts daily life.
You wake with severe headaches, have chest pain, shortness of breath, or palpitations during or shortly after sleep.
You have worsening memory, concentration, mood changes, or impaired judgment that could affect work, driving, or daily safety.
You have had persistent daytime sleepiness despite spending enough time in bed, or you need substantially more sleep than expected.

A clinician can assess symptoms, medications, medical conditions, and sleep patterns. Insurance coverage and the need for a formal sleep study vary by plan and medical situation; Medicare’s sleep-study coverage information provides one starting point for beneficiaries.

FAQ

How do I know if I need more sleep?

If you feel alert and function well during the day, your current sleep may be adequate. Persistent sleepiness, difficulty concentrating, frequent yawning, or needing repeated alarms can indicate that you are not getting enough sleep or are not sleeping well.

Can I catch up on missed sleep?

Occasional extra sleep can help after a short period of restriction, but it may not fully reverse the effects of prolonged sleep debt. Regular sleep is generally more effective than repeatedly staying up late and sleeping in on weekends.

Do older adults need fewer hours of sleep?

Older adults generally need a narrower range, often about seven to eight hours, but aging does not make chronic sleep deprivation safe. Persistent insomnia, frequent awakenings, snoring, or daytime sleepiness should still be evaluated.

Does taking a nap replace nighttime sleep?

Naps can be useful when short and appropriately timed, but long or late naps can make it harder to fall asleep at night. They also may conceal sleepiness caused by inadequate sleep or a sleep disorder.

Can lack of sleep cause weight gain?

Sleep deprivation can affect appetite, hormone regulation, and food choices, which may contribute to weight gain. It is one factor among many and does not alone establish why someone’s weight has changed.

Should I take sleeping pills or supplements?

Medication and supplements can interact with health conditions or other medicines, and their effects vary. Discuss persistent sleep difficulty with a clinician rather than starting and changing sleep products on your own.

Sources

This article is for general information and is not medical advice.

Medical disclaimer. This article is for general information and is not medical advice. It does not replace an assessment by a qualified clinician. See our editorial policy.