How people get it: Free. For long-lasting sleep problems, doctors may suggest a talking therapy for insomnia (CBT-I).
The basics
What it is
- Quality sleep means sleep that is uninterrupted and refreshing.
- The amount of sleep a person needs depends on age, lifestyle, health, and sleep patterns.
- During sleep, the brain cycles through non-REM (non-rapid eye movement) and REM (rapid eye movement) stages.
- REM sleep is when most dreaming occurs.
Sources: CDC: About Sleep | Sleep ↗ · MedlinePlus (NIH): Healthy Sleep ↗
How it's thought to help
- Certain phases of sleep help release growth hormone, which helps children grow and helps repair muscle and tissue in everyone.
- Certain phases of sleep help strengthen the immune system by producing cytokines, hormones that help the body fight infection.
- Certain phases of sleep help give the heart and blood vessels a rest.
- Certain phases of sleep help keep a healthy balance of the hormones that control hunger and fullness.
- All the sleep stages are needed for healthy sleep.
What the research has found so far
A review of studies of cognitive behavioral therapy for insomnia found that sleep hygiene education was not essential. The same review found that in-person therapist-led programs were the most beneficial.
Source: PubMed abstract ↗
On getting enough sleep and aging, PubMed lists 2,067 trials in people, 6,373 studies that watched people over time, 49 animal and lab studies. See the counts and searches
Stage 4 because it is recommended by the CDC (7 or more hours of sleep for adults 18 to 60). See the source ↗
A stage shows how far research has got, not whether it will work for you. How stages work
Who should be careful
- Sleep deprivation makes the effect of alcohol stronger.
- A tired person who drinks too much is more impaired than a well-rested person who drinks the same amount.
- Some people have sleep disorders that keep them from getting enough quality sleep no matter how hard they try.
- Shift workers may find getting good sleep more challenging.
Sources: MedlinePlus (NIH): Healthy Sleep ↗ · CDC: About Sleep | Sleep ↗
Questions to ask your doctor
- Is getting enough sleep a good fit for me, given my health and the medicines I take?
- Is there anything I should avoid or watch for, given my health conditions?
- Where should I start, and how much is right for me?
- How would we tell whether it is helping, and when should we review it?
This is general information gathered from the sources listed, not medical advice. Talk to your doctor before starting anything new.
What experts say
No expert views collected yet. Each one we add names the person and links to where they said it.
What others are writing
Recent articles about Getting enough sleep from health journalists, hospitals and universities. We link to them; we don't write or endorse them.
Harvard professor calls out 'lie' of needing 8 hours of sleep a night, says it's Industrial Era 'nonsense' ↗
“Most adults do not need a hard eight hours of sleep; a growing body of evidence and evolutionary research suggest the optimal nightly sleep for many healthy adults is closer to seven ho”
The article argues that the eight-hour sleep rule is outdated and that about seven hours is often optimal for healthy adults.
The many dimensions of a good night's sleep ↗
“Getting enough sleep is essential for cardiovascular health. But the quality, timing, and regularity of your slumber also matters.”
The article explains that sleep duration, continuity, regularity, and daytime functioning all affect heart health, not just hours slept.
How much sleep do you need? Expert recommendations for every age ↗
“Ultimately, sleep needs are as individual as any other human trait and vary from person to person — some people need more than others.”
The article explains that sleep needs vary by person and that most adults get less sleep than their bodies require.
Recent research
New studies that mention Getting enough sleep appear here after the morning update.
Trials
ClinicalTrials.gov lists 1,304 registered trials that mention Getting enough sleep, for any condition (the count in The science below). Here we show the ones about aging. See them all ↗
The science
Counted from PubMed and ClinicalTrials.gov on Oct 30, 2026, using one search for Getting enough sleep in relation to aging. Each link opens the exact search.
- Randomized trials in people
- 1,766 search ↗
- Large trials (multicenter or phase 3)
- 216 search ↗
- Phase 3 trials
- 30 search ↗
- Trials in people
- 2,067 search ↗
- Studies that watched people over time
- 6,373 search ↗
- Animal and lab studies
- 49 search ↗
- Registered trials
- 1,304 search ↗
PubMed search used
("sleep duration"[tiab] OR "sleep hygiene"[tiab] OR "sleep extension"[tiab] OR "sleep quality"[tiab] OR "cognitive behavioral therapy for insomnia"[tiab] OR CBT-I[tiab]) AND (aging[tiab] OR ageing[tiab] OR longevity[tiab] OR healthspan[tiab] OR "older adults"[tiab] OR "older people"[tiab] OR elderly[tiab] OR "Aged"[mh])
Counts are search results, so they include some records that only mention Getting enough sleep. How we count
Cite or share this page
Longevity Progress. (n.d.). Getting enough sleep: Research stage and evidence. Retrieved October 30, 2026, from https://longevityprogress.com/treatments/sleep-habits
<iframe src="https://longevityprogress.com/embed/stage/sleep-habits" title="Getting enough sleep: research stage on Longevity Progress" width="340" height="72" style="border:0" loading="lazy"></iframe>
The badge shows this treatment's current research stage and links back here. It updates by itself when the stage changes.