The honest version
Lying awake running through tomorrow's to-do list is one of the most common complaints people bring to WikiRemedy. Some of what's marketed for sleep is genuinely well-supported. Some is worth a try at low cost and low risk. Here's an honest, evidence-graded look at both kinds, ordered roughly by how strong the research actually is.
1. Retrain the association between bed and sleep
Research: Very StrongCognitive behavioural therapy for insomnia (CBT-I) isn't a single trick — it's a short structured program that works on sleep timing, the thoughts that keep you wired at night, and breaking the habit of lying in bed awake and frustrated. Multiple meta-analyses of randomised trials show moderate-to-large improvements in how long it takes to fall asleep and how well people sleep through the night, with benefits still measurable a year later. It's the treatment sleep medicine bodies recommend before medication, and it now comes in guided app and workbook formats as well as in-person therapy.
2. Sleep colder than feels natural
Research: StrongYour core body temperature needs to drop for sleep to start and to stay deep, which is why an overheated bedroom is such a reliable saboteur. Large population studies link warmer bedrooms to worse sleep quality, and small controlled trials using bed- or room-cooling have shown measurably shorter time to fall asleep and more restored total sleep time compared with a normal, warmer room. Most sleep clinicians point to roughly 16–19°C (60–66°F) as the sweet spot — cooler than most people keep their bedroom by habit.
Related: Cold Sleeping Environment (16–19°C), tracked for Insomnia.
3. Melatonin — timing matters more than most people think
Research: ModerateMelatonin is a hormone your brain already makes to signal that it's night, not a sedative — which is why it works best as a timing cue rather than a knockout dose. Pooled trial data shows it shortens time to fall asleep by around 7 minutes on average, a modest but real effect, with dose-response research suggesting the benefit plateaus somewhere around 3–5mg and doesn't obviously improve much beyond that. It appears not to lose effectiveness with regular use, unlike some sleep medications.
Related: Melatonin (0.5–3mg), tracked for Insomnia.
4. Magnesium — plausible, but the evidence is still thin
Research: ModerateMagnesium is involved in the nervous system pathways that help the body wind down, which is the theory behind using it for sleep. The trial evidence is genuinely mixed: a meta-analysis in older adults found meaningfully shorter time to fall asleep with supplementation, while a 2025 trial in general adults found only a small improvement in insomnia symptoms — and several reviews note the underlying studies are small and inconsistent enough that magnesium isn't yet a slam-dunk recommendation. It's inexpensive and low-risk, which is probably why it remains popular despite the shaky evidence base.
Related: Magnesium Glycinate, tracked for Insomnia.
5. The basics still count — just not as much as CBT-I
Research: ModerateConsistent wake times, cutting evening caffeine, dimming lights before bed, and skipping daytime naps make up what's usually called sleep hygiene. Reviews find real, measurable improvement in insomnia scores from sleep hygiene education alone — but head-to-head trials consistently show it's meaningfully weaker than CBT-I on its own. Worth doing as a foundation, not worth expecting it to fix a stubborn sleep problem by itself.
Related: Sleep Hygiene Protocol, tracked for Insomnia.
6. Slow, paced breathing before lights-out
Research: LimitedTechniques like 4-7-8 breathing slow your breathing rate to roughly six breaths a minute, which small studies link to a shift toward the calmer, parasympathetic side of the nervous system — more heart-rate variability, more of the brainwave patterns associated with relaxation, and in a handful of trials, shorter time to fall asleep and fewer night-time awakenings. The studies are small and short, so treat it as a genuinely low-cost experiment rather than a proven fix.
Related: 4-7-8 Breathing, tracked for Insomnia.
The bottom line
If you only do one thing, CBT-I has the strongest evidence by a wide margin — and it's the one most people have never heard of, because there's no product to sell. A cooler bedroom is the closest thing to a free win. Everything else here is reasonable to try, but worth judging by your own results rather than the marketing: WikiRemedy shows the research grade for each remedy above alongside what real people who logged an attempt actually reported.
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WikiRemedy surfaces community experience, not medical advice. Always consult a qualified health professional. This article is general information, not a diagnosis or treatment plan. If symptoms are severe, persistent, or come with warning signs like bleeding, unexplained weight loss, or fever, see a doctor.