Scientifically Reviewed by
Dr. Elaine Blank, PhD
PhD in clinical psychology from the University of Arizona, Clinical internship at the University of Maryland,
Postdoctoral work at the Stanford University School of Medicine
Quick answer: Traditional natural sleep aids like chamomile tea, warm milk, valerian, lavender, tart cherry juice, and magnesium-rich foods have small trials with mixed results, and none is an established treatment for insomnia. The natural sleep aids that do hold up in research are behaviors: keep one wake time and get morning light, get out of bed when you cannot fall back asleep, match your time in bed to the sleep you actually get, and practice relaxation while awake. They come from CBT-I (Cognitive Behavioral Therapy for Insomnia), which the American Academy of Sleep Medicine (AASM) strongly recommends for chronic insomnia in adults [1]. A warm bath 1 to 2 hours before bed and regular exercise have smaller but real support.
People have been drinking chamomile for sleep since antiquity. Warm milk before bed is older than anyone's grandmother. Valerian root shows up in medical texts from ancient Greece. These remedies lasted because they are gentle, they cost little, and on some nights they seem to work. What they never had, until recently, was a fair test: the same person, the same kind of night, remedy against placebo, measured.
Over the past twenty years, most of the traditional natural sleep aids have been through at least one controlled trial, and sleep medicine has produced treatment guidelines that rank the drug-free options by evidence. The results are uneven. Some remedies show a small effect in small studies. Some show nothing against placebo. And a different set of aids, ones that are not products at all, turned out to carry the strongest evidence for chronic insomnia.
If you are searching for a natural sleep aid that isn't a pill, you probably want something for insomnia that will not leave you foggy, bargaining with a refill, or wondering whether last night "counted." In Rest's survey of nearly 20,000 people, 81.4% of respondents had already tried sleep medication. Routine changes came next, then cutting caffeine, then staying in bed longer. The last of those is the intuitive move, and it is one of the things that feeds the problem.
If you are on a prescribed sleep medication, changing it is a conversation with your clinician, not a swap you make from a blog post.
Traditional Natural Sleep Aids: What the Evidence Says
These are the remedies people reach for first. Here is what the research shows for each.
Chamomile tea. The one placebo-controlled trial in people with chronic insomnia, 34 adults taking a chamomile extract for 28 days, found no significant difference from placebo on any sleep diary measure [2]. A 2024 review of ten studies and 772 participants, most of them not insomnia patients, found chamomile improved self-rated sleep quality, with large variation between studies, and did not improve sleep duration, sleep efficiency, or daytime functioning [3]. As a wind-down cue, a warm cup is harmless for most people.
Valerian root. Taken as a tea or an extract. The AASM's 2017 guideline makes a weak recommendation that clinicians not use valerian for chronic insomnia, due to insufficient evidence. In the trial it relied on, a valerian-hops extract shortened measured time to fall asleep by about 9 minutes versus placebo (95% CI 0.27 to 18.3 minutes), which the guideline described as approaching clinical significance, on low-quality evidence; other outcomes did not reach the threshold [4].
Lavender. Inhaled, not swallowed. A 2014 systematic review found 15 small studies of inhaled essential oils, 11 randomized, most reporting better sleep, lavender being the most studied, and no adverse events. The authors' scope was mild sleep disturbance, and they called for larger, stronger trials [5].
Warm milk. The usual explanation is tryptophan. The AASM reviewed tryptophan on its own and suggests clinicians not use it for chronic insomnia; but those trials tested tryptophan, not milk [4]. A 2020 systematic review of 14 milk and dairy studies found mixed results, with some positive findings, especially for tryptophan-enriched or fermented milk, and small samples throughout [6]. Evidence specifically for ordinary warm milk in chronic insomnia is insufficient either way. It is common as a bedtime ritual and likely harmless when used that way.
Tart cherry juice. In a crossover trial of 20 healthy adults, a week of concentrate raised melatonin in urine and nudged total sleep and sleep efficiency up [7]. In a placebo-controlled crossover pilot in adults over 50 with insomnia, the eight who completed it slept 84 minutes longer on polysomnography after two weeks of juice than after placebo [8]. Eight people is a preliminary result, not an established effect, but it is a positive insomnia trial and it deserves a mention.
Magnesium from food. Leafy greens, beans, nuts, seeds, whole grains. In the CARDIA cohort of 3,964 adults, those reporting the highest magnesium intake were less likely to report sleeping under seven hours, and the link to sleep quality was borderline; both intake and sleep were self-reported, so this is an association, not a trial [9]. Eating magnesium-rich food is good for plenty of reasons. Insomnia treatment is not an established one. For what the supplement trials show, see why magnesium replaced melatonin on the nightstand.
Do Traditional Remedies Work for Insomnia?
The honest summary is that these remedies have small trials, mixed results, and, for the ones the AASM has reviewed, weak recommendations against their use as treatments for chronic insomnia [4]. A weak recommendation is a statement about certainty and trade-offs, not proof that something does nothing. The evidence quality behind each also differed; the guideline rated its tryptophan evidence high and its valerian evidence low, and reached the same recommendation for both because neither showed a clinically meaningful benefit [4].
What the remedies do not have is a body of trials in chronic insomnia showing durable change in the outcomes that matter: time to fall asleep, time awake at night, sleep efficiency. The behavioral aids do, which is why multicomponent CBT-I carries the AASM's only strong recommendation among drug-free options, and why stimulus control, sleep restriction, and relaxation are each conditionally recommended on their own [1].
None of that makes a cup of chamomile a bad idea. For a rough night it is a pleasant wind-down. For months of insomnia, the aids with the evidence are the ones below.
Still hunting for a natural sleep aid?
Rest coaches the behavioral ones every morning, by text or voice, using the principles of CBT-I.
Natural Sleep Aids That Aren't Pills: What Actually Works
These are the non-pill options with the most support, roughly in the order a sleep clinician would reach for them. The first four are components of CBT-I. The rest are supporting measures.
Keep one wake time, and get light soon after
Sleep drive builds while you are awake; the body clock decides when it is allowed to win [10]. A fixed wake time, held on weekends and after bad nights, keeps that pressure building instead of spreading it across a lie-in. Morning light then anchors the clock: in a controlled study, bright light in the early morning pulled the clock earlier, while the same light late at night pushed it later [11]. That makes morning light the right tool for a clock that has drifted late. If you fall asleep and wake too early instead, the AASM's circadian guideline points to evening light [12].
Rest's guidance is 15 to 30 minutes of daylight after waking and no naps beyond a brief safety rest; both are the program's numbers, not thresholds a trial fixed. How to reset your sleep schedule explains why wake time, not bedtime, is the place to start, and does napping cause insomnia covers the nap rule.
Get out of bed when you cannot fall back asleep
After enough nights of lying there working at it, the bed becomes a cue for being awake. That is conditioned arousal, and it is why lying awake in bed feels worse the longer you stay put [13]. Stimulus control retrains the pairing: go to bed only when sleepy; if you wake and cannot get back to sleep after roughly 15 to 20 minutes, get up, keep the lights low, do something quiet, and return when sleepiness comes back [13]. Brief awakenings that pass on their own need no response. Sleep is close to automatic when you leave it alone, and it is specifically vulnerable to being forced [14]. Can't get back to sleep? What to do at 3am has the step-by-step.
Match time in bed to the sleep you actually get
Extra hours in bed "just in case" donate extra time awake, not extra sleep. Sleep restriction therapy does the reverse: it limits time in bed closer to how long you really sleep, so pressure is high when you get in and sleep consolidates [15]. Do not build a shortened window on your own. In a study of 16 people with insomnia, measured sleep fell by 91 minutes on the first night and daytime sleepiness stayed elevated for the first three weeks before returning to baseline by three months [16]. Do not drive or do safety-critical work while you are that sleepy, and if you have bipolar disorder, a seizure disorder, untreated sleep apnea, or a job where one lapse is dangerous. Sleep restriction vs. sleep deprivation explains why it is not the same as losing sleep.
Practice relaxation while you are awake
Slow breathing, progressive muscle relaxation, and similar practice are a CBT-I component in their own right, and the AASM conditionally recommends relaxation therapy as a stand-alone option for chronic insomnia [1]. That backing is for structured, repeated practice, not for a branded countdown from a video. Relaxation works on arousal, the "switched on" feeling that keeps sleep away. It does not change how many hours you spend in bed or what the bed has come to mean, which is why programs pair it with the aids above rather than using it alone.
Take a warm bath or shower 1 to 2 hours before bed
This one has better evidence than most people expect. A 2019 meta-analysis of 17 studies found that warm water at about 104 to 109°F (40 to 42.5°C), scheduled 1 to 2 hours before bedtime for as little as 10 minutes, was associated with better self-rated sleep quality and sleep efficiency, and shortened time to fall asleep by roughly 10 minutes [17]. The likely mechanism is that warming the hands and feet helps the body dump core heat, and a falling core temperature is one of the signals that sleep is due. The authors flag that the timing finding rests on only two small studies, and most participants were not people with chronic insomnia. It is potentially helpful; but not a treatment on its own.
Exercise regularly
A 2018 meta-analysis of nine randomized trials in 557 people with insomnia found that exercise programs improved self-rated sleep quality by about 2.9 points on the Pittsburgh Sleep Quality Index and insomnia severity by about 3.2 points on the Insomnia Severity Index, without notable side effects [18]. Sleep efficiency did not change, and the authors rated the evidence low to very low quality because most trials had a high or unclear risk of bias. Regular exercise is worth doing for its own sake and appears to help how sleep feels; but it has not been shown to fix chronic insomnia on its own. Finish vigorous sessions a few hours before bed so the body has time to cool.
Clear the obstacles: caffeine, alcohol, light, temperature
Sleep hygiene is the set of habits that remove things working against sleep. Rest coaches a short list, with numbers chosen to be easy to follow:
Caffeine cutoff. Caffeine's half-life is about 4 to 6 hours, so a mid-afternoon coffee is still working into the evening [19]. Rest's cutoff is 11am; a more precise version is to stop at least 8 hours before you fall asleep. The caffeine cutoff has the full rule.
Bedroom at 65 to 68°F, dark and quiet. Rest treats 70°F as the ceiling. The best temperature for sleep explains why a slightly cool room helps.
Lights down for the last 2 to 3 hours. This includes evening room lighting, not only phone and tablet lights.
No alcohol within 4 hours of bed, last meal at least 2 hours before. A drink can make you drowsy at first but then fragment the latter half of the night [20].
The limit: sleep hygiene alone is not a treatment for insomnia that has lasted months. The AASM suggests clinicians not use it as a single-component therapy for chronic insomnia in adults [1], and a 2015 review reached the same conclusion: solid as population health advice, weak as a stand-alone treatment once insomnia is established [21]. Do it so the aids above have less working against them.
What Is the Best Natural Sleep Aid for Insomnia?
There isn't a single best one, because chronic insomnia is usually more than one problem at once: a bed that now means "awake," too many hours in it, a racing mind, a clock that has slid, a brain that stays a little too switched on.
Multicomponent CBT-I is the strong recommendation for chronic insomnia in adults [1]. Stimulus control, sleep restriction, and relaxation are each conditionally recommended on their own [1]. Sleep hygiene is not recommended as a stand-alone treatment [1]. Valerian and tryptophan carry weak recommendations against [4]. The American College of Physicians recommends CBT-I as the initial treatment, with medication considered afterward if CBT-I alone is unsuccessful [22].
So the best natural sleep aid, in the sense people mean, something that is not a drug and that moves chronic insomnia, is the package those behaviors belong to. One aid works on one perpetuating factor. The program works on several at once. That is also why swapping chamomile for a week, then cherry juice, then a new wind-down playlist tends not to last: each can change a night, and none of them retrains the bed, rebuilds sleep drive, or holds the wake time that the next night depends on.
How Rest Helps You Apply These
Rest is an iOS program built on the behavioral principles of CBT-I, plus circadian biology and behavior change, together with world-class sleep experts from institutions like UCSF and Stanford. Rest is not a medical treatment, not a substitute for care, and not an alternative to a medication your clinician prescribed.
What it does is coach the non-pill aids in the order the nights need. You log sleep each morning. The program sets a sleep window from those logs, using its own formula (average nightly sleep plus 30 minutes), and adjusts it in small steps as sleep efficiency improves. The coach is available by text or voice at any hour, not only at the morning check-in. The free tier includes the education library, the sleep-window calculation, the relaxation audio, and the sleep log; the daily coaching conversations are the paid part.
On outcomes, Rest published a real-world outcomes whitepaper in 2026 covering 318 users who completed 8 weeks of the program. Sleep efficiency rose from 75% to 88%, time to fall asleep fell from 28 to 13 minutes, time awake at night fell from 56 to 29 minutes, and 73% of users reached a sleep efficiency of 85% or higher, up from 12% in week one [23].
If insomnia has been going on for months, start with the aids that are not a product. See how Rest can help »
Frequently Asked Questions
What are natural sleep aids that aren't pills? They are behaviors: keeping a consistent wake time, getting morning light, getting out of bed when you cannot fall back asleep and returning when sleepy, matching time in bed to the sleep you actually get, and practicing relaxation while awake. A warm bath 1 to 2 hours before bed and regular exercise have smaller supporting evidence. For chronic insomnia, the core behaviors sit inside CBT-I, which the AASM strongly recommends for adults.
Does chamomile tea help with insomnia? The one placebo-controlled trial in chronic insomnia, 34 adults taking a chamomile extract for 28 days, found no significant difference from placebo on sleep diary measures. A 2024 review of ten studies in broader groups found better self-rated sleep quality but no change in sleep duration or efficiency. The evidence is mixed, and the only trial in chronic insomnia found no benefit. As a wind-down cue, a warm cup is harmless for most people.
Does warm milk help you sleep? Evidence specifically for ordinary warm milk in chronic insomnia is insufficient. The usual tryptophan explanation has not been tested with milk itself; the trials behind the AASM's recommendation against tryptophan used it on its own. A 2020 review of milk and dairy studies found mixed results, with some positive findings for tryptophan-enriched or fermented milk.
What is the best natural sleep aid for insomnia? No single habit is the best one, because chronic insomnia usually has more than one thing holding it in place. The AASM's strong recommendation is multicomponent CBT-I. Stimulus control, sleep restriction, and relaxation are each conditionally recommended on their own. Sleep hygiene is not recommended as a stand-alone treatment, and valerian and tryptophan carry weak recommendations against for chronic insomnia in adults.
Is melatonin a natural sleep aid? Not in the sense this article means. Melatonin is a hormone your brain makes in response to darkness, so the word "natural" attaches to it easily, but the melatonin in a bottle is a supplement, most often made synthetically, and it comes as a pill or a gummy. It is also a timing signal for the body clock, not a sedative, which is why it has evidence for jet lag and a late-running clock and not for chronic insomnia. Does melatonin actually work for sleep goes through the details.
Can you improve insomnia without medication? Yes. CBT-I is a behavioral treatment, and both the American Academy of Sleep Medicine and the American College of Physicians put it ahead of medication for chronic insomnia in adults. If you already take a prescribed sleep medication, do not stop or change it without talking to the clinician who prescribed it.
Disclaimer. This article is published for general information only. It is not medical advice or a diagnosis, and nothing here is a recommendation to take, avoid, or change any supplement or medication. Rest is not a substitute for professional medical care. Do not start, stop, or adjust a treatment, including a prescribed sleep medication, without talking to your clinician.
Citations
Edinger, J. D., Arnedt, J. T., Bertisch, S. M., et al. (2021). Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline. Journal of Clinical Sleep Medicine, 17(2), 255–262. https://doi.org/10.5664/jcsm.8986 — Strong recommendation for multicomponent CBT-I in adults with chronic insomnia. Conditional recommendations for stimulus control, sleep restriction, and relaxation as single-component options. Conditional recommendation against sleep hygiene as a stand-alone therapy.
Zick, S. M., Wright, B. D., Sen, A., & Arnedt, J. T. (2011). Preliminary examination of the efficacy and safety of a standardized chamomile extract for chronic primary insomnia: A randomized placebo-controlled pilot study. BMC Complementary and Alternative Medicine, 11, 78. https://doi.org/10.1186/1472-6882-11-78 — 34 adults with chronic primary insomnia, 270 mg chamomile extract twice daily or placebo for 28 days. No significant differences on sleep diary measures.
Kazemi, A., Shojaei-Zarghani, S., Eskandarzadeh, P., & Hashempur, M. H. (2024). Effects of chamomile (Matricaria chamomilla L.) on sleep: A systematic review and meta-analysis of clinical trials. Complementary Therapies in Medicine, 84, 103071. https://doi.org/10.1016/j.ctim.2024.103071 — Ten studies, 772 participants, healthy and diseased adults. PSQI improved (WMD −1.88, 95% CI −3.46 to −0.31; I² 88%); no improvement in sleep duration, sleep efficiency, or daytime functioning.
Sateia, M. J., Buysse, D. J., Krystal, A. D., Neubauer, D. N., & Heald, J. L. (2017). Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults: An AASM clinical practice guideline. Journal of Clinical Sleep Medicine, 13(2), 307–349. https://doi.org/10.5664/jcsm.6470 — Weak recommendations that clinicians not use valerian or tryptophan for sleep-onset or sleep-maintenance insomnia in adults. Valerian: based on a valerian-hops trial; PSG sleep latency 9.29 minutes shorter than placebo (95% CI 0.27 to 18.3), low-quality evidence. Tryptophan: 250 mg trials; critical-outcome evidence rated high.
Lillehei, A. S., & Halcón, L. L. (2014). A systematic review of the effect of inhaled essential oils on sleep. Journal of Alternative and Complementary Medicine, 20(6), 441–451. https://doi.org/10.1089/acm.2013.0311 — 15 quantitative human studies, 11 randomized. Most reported a positive effect; lavender most studied; no adverse events. Scoped to mild sleep disturbance; authors call for larger, stronger trials.
Komada, Y., Okajima, I., & Kuwata, T. (2020). The effects of milk and dairy products on sleep: A systematic review. International Journal of Environmental Research and Public Health, 17(24), 9440. https://doi.org/10.3390/ijerph17249440 — 14 studies (eight randomized trials), 1972–2019, across children, adults, and older adults. Mixed results; some positive findings, notably with tryptophan-enriched or fermented milk; small samples and variable quality.
Howatson, G., Bell, P. G., Tallent, J., Middleton, B., McHugh, M. P., & Ellis, J. (2012). Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality. European Journal of Nutrition, 51(8), 909–916. https://doi.org/10.1007/s00394-011-0263-7 — Randomized placebo-controlled crossover, 20 healthy adults, 7 days of concentrate. Urinary melatonin rose; total sleep time and sleep efficiency increased. Not a study of insomnia.
Losso, J. N., Finley, J. W., Karki, N., et al. (2018). Pilot study of the tart cherry juice for the treatment of insomnia and investigation of mechanisms. American Journal of Therapeutics, 25(2), e194–e201. https://doi.org/10.1097/MJT.0000000000000584 — Placebo-controlled crossover, adults over 50 with insomnia, 240 mL twice daily for 2 weeks. Eleven randomized, three excluded for sleep apnea; eight completers slept 84 minutes longer on polysomnography versus placebo. Preliminary.
Zhang, Y., Chen, C., Lu, L., et al. (2022). Association of magnesium intake with sleep duration and sleep quality: Findings from the CARDIA study. Sleep, 45(4), zsab276. https://doi.org/10.1093/sleep/zsab276 — 3,964 adults; highest versus lowest intake of magnesium from food and supplements combined was associated with lower odds of sleeping under 7 hours; sleep-quality association borderline. Intake and sleep both self-reported.
Borbély, A. A., Daan, S., Wirz-Justice, A., & Deboer, T. (2016). The two-process model of sleep regulation: A reappraisal. Journal of Sleep Research, 25(2), 131–143. https://doi.org/10.1111/jsr.12371 — Homeostatic sleep pressure and the circadian clock together determine when sleep occurs.
Khalsa, S. B. S., Jewett, M. E., Cajochen, C., & Czeisler, C. A. (2003). A phase response curve to single bright light pulses in human subjects. The Journal of Physiology, 549(3), 945–952. https://doi.org/10.1113/jphysiol.2003.040477 — 21 healthy adults, 6.7-hour exposures to bright light (about 5,000–10,000 lux) under controlled laboratory conditions. Light before the core body temperature minimum delayed the clock; light after it advanced the clock. Exposures were much longer than Rest's morning-light guidance.
Auger, R. R., Burgess, H. J., Emens, J. S., Deriy, L. V., Thomas, S. M., & Sharkey, K. M. (2015). Clinical practice guideline for the treatment of intrinsic circadian rhythm sleep-wake disorders: An update for 2015. Journal of Clinical Sleep Medicine, 11(10), 1199–1236. https://doi.org/10.5664/jcsm.5100 — Distinguishes treatment for advanced and delayed sleep-wake phase disorders; endorses light therapy for adults with advanced phase.
Perlis, M. L., Smith, M. T., Benson-Jungquist, C., & Posner, D. A. (2005). Cognitive Behavioral Treatment of Insomnia: A Session-by-Session Guide. New York: Springer. https://doi.org/10.1007/0-387-29180-6 — Stimulus control instructions, conditioned arousal, and the approximately 15–20 minute guidance for leaving bed when unable to sleep.
Espie, C. A., Broomfield, N. M., MacMahon, K. M. A., Macphee, L. M., & Taylor, L. M. (2006). The attention-intention-effort pathway in the development of psychophysiologic insomnia: A theoretical review. Sleep Medicine Reviews, 10(4), 215–245. https://doi.org/10.1016/j.smrv.2006.03.002 — Sleep is close to automatic, and focused attention plus direct attempts to control it can inhibit it.
Spielman, A. J., Saskin, P., & Thorpy, M. J. (1987). Treatment of chronic insomnia by restriction of time in bed. Sleep, 10(1), 45–56. https://pubmed.ncbi.nlm.nih.gov/3563247/ — Original sleep-restriction trial: 35 patients, 8-week program; excessive time in bed framed as a perpetuating factor.
Kyle, S. D., Miller, C. B., Rogers, Z., Siriwardena, A. N., Macmahon, K. M., & Espie, C. A. (2014). Sleep restriction therapy for insomnia is associated with reduced objective total sleep time, increased daytime somnolence, and objectively impaired vigilance. Sleep, 37(2), 229–237. https://doi.org/10.5665/sleep.3386 — 16 patients, 4 weeks of single-component sleep restriction. Objective total sleep time down 91 minutes on night 1, 78 on night 8, 69 on night 22. Epworth sleepiness scores elevated at weeks 1, 2, and 3; vigilance lapses elevated at three of five assessment points during treatment. Both back to baseline at 3 months.
Haghayegh, S., Khoshnevis, S., Smolensky, M. H., Diller, K. R., & Castriotta, R. J. (2019). Before-bedtime passive body heating by warm shower or bath to improve sleep: A systematic review and meta-analysis. Sleep Medicine Reviews, 46, 124–135. https://doi.org/10.1016/j.smrv.2019.04.008 — 17 studies, 13 in meta-analysis. Water at 40–42.5°C associated with better self-rated sleep quality and sleep efficiency; scheduled 1–2 hours before bed for as little as 10 minutes, shortened sleep onset latency (about 10 minutes). Timing conclusion based on two studies totaling 36 participants.
Banno, M., Harada, Y., Taniguchi, M., et al. (2018). Exercise can improve sleep quality: A systematic review and meta-analysis. PeerJ, 6, e5172. https://doi.org/10.7717/peerj.5172 — Nine randomized trials, 557 participants with insomnia. PSQI 2.87 points lower (low-quality evidence); ISI 3.22 points lower (very low-quality evidence); no significant change in sleep efficiency. Most trials at high or unclear risk of selection bias.
Clark, I., & Landolt, H. P. (2017). Coffee, caffeine, and sleep: A systematic review of epidemiological studies and randomized controlled trials. Sleep Medicine Reviews, 31, 70–78. https://doi.org/10.1016/j.smrv.2016.01.006 — Supports caffeine's half-life range and the direction of its effect on sleep. The 11am cutoff is Rest's recommendation, not a threshold this review sets.
He, S., Hasler, B. P., & Chakravorty, S. (2019). Alcohol and sleep-related problems. Current Opinion in Psychology, 30, 117–122. https://doi.org/10.1016/j.copsyc.2019.03.007 — Alcohol can speed sleep onset and then fragment the night and suppress REM.
Irish, L. A., Kline, C. E., Gunn, H. E., Buysse, D. J., & Hall, M. H. (2015). The role of sleep hygiene in promoting public health: A review of empirical evidence. Sleep Medicine Reviews, 22, 23–36. https://doi.org/10.1016/j.smrv.2014.10.001 — Sleep-hygiene behaviors have support at the population level and are a weak stand-alone treatment for a clinical sleep disorder.
Qaseem, A., Kansagara, D., Forciea, M. A., Cooke, M., & Denberg, T. D. (2016). Management of chronic insomnia disorder in adults: A clinical practice guideline from the American College of Physicians. Annals of Internal Medicine, 165(2), 125–133. https://doi.org/10.7326/M15-2175 — Recommends CBT-I as the initial treatment for chronic insomnia in adults, with medication considered if CBT-I alone is unsuccessful.
Rest (2026). Real-World Effectiveness of Rest: An AI-Driven Sleep Improvement Program Based on the Principles of Cognitive Behavioral Therapy for Insomnia (CBT-I). Company whitepaper. https://getrest.app/sleep-outcomes-2026 — 318 users enrolled September 2025–March 2026 who completed 8 weeks; week 1 versus week 8 sleep logs. Sleep efficiency 74.7% to 87.8%; sleep onset latency 28 to 13 minutes; wake after sleep onset 56 to 29 minutes; users at SE ≥85% from 11.6% to 73.3%. Pre-post, completer analysis, self-selected sample, no control group.