Sleep by age
How much sleep do older adults need?
The number does not go down. Seven or more hours is the adult recommendation and it does not carry an upper age limit, which contradicts the most widely repeated belief about sleep and ageing.
In short
The American Academy of Sleep Medicine recommendation of 7 or more hours per night applies to adults without an upper age cut-off. What changes with age is not how much sleep is needed but how easily it is obtained: the night becomes lighter, more broken, and shifts earlier.
- Hours per night, unchanged
- 7+Hours per night, unchangedThe figure has no age ceiling
- Body clock drift with age
- EarlierBody clock drift with ageSleep and wake both advance
- What actually changes
- LighterWhat actually changesStructure, not requirement
Older adults, 61 years and over
7 to 8hours per night
As published by the American Academy of Sleep Medicine in its consensus statement on recommended sleep duration. Quoted as a range because that is how it was issued: healthy sleepers in this band sit across the whole span, and a single number would be us inventing a precision the evidence does not have.
The requirement holds; the ease of meeting it does not
The belief that older adults need less sleep is widespread and is not what the consensus says. The recommendation is written for adults and does not stop applying at sixty. What the evidence does show is that older adults reliably get less sleep, which is a different statement and gets confused with the first one constantly.
The distinction is not academic. If you believe the requirement has fallen, a short broken night looks like normal ageing and gets ignored. If you know it has not, the same night looks like a shortfall worth understanding, and the causes are frequently addressable.
What is actually changing is the architecture
The proportion of the night spent in deep sleep declines with age, and the number of brief awakenings rises. Both are ordinary. Together they mean that seven hours in bed at seventy is a lighter, more interrupted seven hours than the same figure at thirty, which is why the same duration can feel less restorative.
The other change is timing. The circadian rhythm tends to advance, so sleepiness arrives earlier in the evening and waking arrives earlier in the morning. Waking at five is often that shift rather than insomnia, and the two get treated identically when they should not be.
The structural terms are at /glossary/sleep-architecture and /glossary/deep-sleep.
Where a phone is useful and where it is not
The genuinely useful thing a sleep app can do here is separate time in bed from time asleep, because that gap widens with age and is invisible from memory. Knowing that eight hours in bed produced six and a half hours of sleep is actionable in a way that feeling unrested is not.
What it cannot do is tell you why, and this is the age band where that limitation matters most, because the causes are more likely to be medical. Anything persistent belongs with a doctor. An app is an instrument, not an explanation.
What is actually different at this age
The total is the headline. These are the things that change underneath it, and they are usually what somebody is really asking about.
What changes
- Deep sleep declines with age, so the same number of hours delivers a different mix of stages.
- The body clock advances, which is why waking early becomes common and is usually a shift rather than a shortage.
- Night-time waking becomes more frequent, which makes time in bed and time asleep diverge more than they used to.
Where an app stops being the right tool
Stated plainly rather than buried, because a sleep app writing about sleep has an obvious incentive not to.
Limits worth knowing
- Tock estimates sleep and is not a medical device. Nothing it shows is a diagnosis.
- Sleep changes often accompany medication, pain and other conditions, and untangling those is a job for a doctor rather than for an app.
- Tock does not detect, screen for or suggest sleep apnea. If breathing during sleep is a concern, that is a clinical question.
Tock estimates sleep and is not a medical device. Nothing here is medical advice, a diagnosis, or a substitute for one. If sleep is genuinely not working, that is a conversation for a doctor rather than for an app or an article.
Questions people ask
Do older adults need less sleep?
No. The seven or more hours recommendation applies to adults without an upper age limit. Older adults reliably get less sleep, which is a different thing from needing less, and the two are widely confused.
Why do I wake up so early now?
The body clock tends to advance with age, so both sleepiness in the evening and waking in the morning arrive earlier. Early waking of that kind is a timing shift rather than a shortage. If it comes with feeling unrested despite enough hours, that is worth raising with a doctor.
Is waking up several times a night normal as you get older?
More frequent brief awakenings are a normal part of how sleep changes with age. What is worth attention is when they are long enough to substantially reduce total sleep, or when they come with breathing problems, pain or medication changes, all of which are clinical questions rather than app ones.
Other age bands
The same consensus statement, read for a different age.
- How much sleep adults needThe American Academy of Sleep Medicine recommends that adults sleep 7 or more hours per night on a regular basis to promote optimal health. It is expressed as a minimum rather than a range because the evidence supports a lower bound far more firmly than it supports an ideal figure.
- How much sleep teenagers needThe American Academy of Sleep Medicine recommends that teenagers aged 13 to 18 years sleep 8 to 10 hours per 24 hours on a regular basis. The obstacle is a genuine biological shift: the adolescent circadian rhythm runs later, so a teenager cannot reliably fall asleep at the time an early school start requires.
Elsewhere on the site
A different corner of the same problem.
- AlternativesTock vs CalmTock is not a Calm replacement and does not try to be. Calm has a narrated library with named voices and licensed music that a small team cannot match. Tock wakes you, tracks the night and tells you what happened. If falling asleep is your problem, Calm is the better buy.
- RoundupsThe best alarm apps for shift workersFor shift workers the most reliable alarm is still the iPhone Clock app, because it makes no assumptions about your schedule and lets you keep a saved alarm for every shift pattern. Tock is the better pick if you also sleep in the daytime and need something that will not let you turn it off half asleep at 4pm.
- Wake timesWaking up at 4:00amBedtimes by sleep cycle for a 4:00am alarm.
- BedtimesGoing to bed at 10:00pmWhere to put the alarm after a 10:00pm lights-out.
- NapsThe 60 minute napA 60 minute nap includes a substantial amount of slow wave sleep, which is useful for recovery and for some kinds of memory, and it usually ends before the cycle completes. That means the benefit is real and the wake-up is often groggy, so it suits situations where the hour afterwards is flexible.
- Wake tonesLoud alarm soundsTock's alarms ring through silent mode and through a Focus because they are built on Apple's AlarmKit, not on an app keeping audio alive in the background. What no app can do is raise your iPhone's hardware volume for you. Loudness gets your eyes open; the wake-up mission is what stops you dismissing it and going straight back to sleep.
Knowing the number is the easy half
Hitting it is the other one. Tock measures what you actually got rather than what the schedule allowed for, and wakes you at a lighter moment inside the last half hour.