You know the evenings that go wrong: dinner late, one more episode, emails in bed, then lying awake with the day still running. You also know the rare evenings that go right, when you are asleep almost before your head is down. It is tempting to think a perfect routine would make every night like that.
Evening routines are everywhere, and many of the tips are reasonable. The catch is that sleep hygiene advice on its own is not an effective treatment for chronic insomnia, and some popular rules rest on very little.1 The parts that do have evidence are worth knowing precisely.
This guide walks you through why a steady wake-up time anchors everything, then the hours before bed in order: drinks, dinner, exercise, light, a warm shower and a quieter mind. It ends with one ordinary evening put together, the limits of any routine, and where we can help.
Start with an honest frame: what an evening routine can change, what it cannot, and the morning habit that makes the evening work.
A good routine helps, but it does not treat insomnia#
A steady evening supports ordinary sleep, but it has limits. For chronic insomnia, the American Academy of Sleep Medicine advises against relying on sleep hygiene advice alone and recommends cognitive behavioural therapy for insomnia (CBT-I) instead.1
That is no reason to ignore the evening. Several of its pieces, such as light, caffeine, alcohol and warmth, have measurable effects on sleep in research, and those are what this guide focuses on.
Think of the routine as setting the conditions for sleep, not as a switch. It makes a good night more likely but cannot force one, and trying too hard to sleep perfectly can backfire, as sleep researchers have seen in people chasing perfect tracker data.2
- I can’t switch off in the evening
- I end up scrolling in bed
- Exhausted but wired at bedtime
- I doze on the sofa, then lie awake in bed
- Weekends wreck my sleep
A steady wake-up time anchors the evening#
The evening starts in the morning. Light after waking sets your body clock, and regular timing matters in its own right: in a large study, the least regular sleepers had a higher death rate than more regular ones, an association rather than proof.34
Light reaching the eyes is the main signal for the body clock: roughly, morning light moves it earlier, while evening and night light move it later.3 Getting up at the same time and seeing daylight soon after gives the clock a firm daily anchor.
In 60,977 UK Biobank participants, the more regular four fifths had 20 to 48% lower mortality from any cause than the least regular fifth over about six years, and regularity predicted it better than sleep length did.4 We suggest fixing the wake-up time first, seven days a week, because it is the easiest part to control; bedtime then follows sleepiness.
With the morning fixed, the evening can be planned backwards from bedtime.
Understand your evenings better
Seven short questions, and one of our experts reviews your case personally, then goes through it with you on a free call.
Now the evening itself, roughly in the order it unfolds: what you drink, when you eat and move, then the light around you in the final hours.
Caffeine stops by late afternoon, and alcohol has a cost#
Drinks come first in the countdown. Substantial caffeine still disturbed sleep when taken six hours before bed, and alcohol, at every dose studied, steadies the first half of the night and then disrupts the second.56
In a study at home, 400 mg of caffeine taken at bedtime, three hours before or six hours before bed all disturbed sleep compared with a placebo.5 For a 23:00 bedtime, six hours means your last strong coffee by 17:00; your own notes may show you need an earlier cut-off.
Alcohol shortens the time it takes to fall asleep, which is why it feels helpful, but sleep becomes more disrupted in the second half of the night and dream sleep is delayed.6 Our guide to waking at 3 a.m. looks at that pattern in more detail.
Dinner timing: a sensible gap, not a strict rule#
An ideal dinner time has never been established. Research on meal timing and sleep is weak and mixed, so two to three hours before bed is a sensible default, and becomes a firmer rule if reflux wakes you at night.789
A survey of 793 students linked eating within three hours of bed with more night waking, and its authors call the finding preliminary.7 In a laboratory trial, 20 healthy volunteers slept no differently after a dinner at 22:00 than after one at 18:00.8 For people with reflux, the American College of Gastroenterology suggests avoiding meals in the two to three hours before bed, while rating the evidence as low.9 Our guide to food and sleep goes into the detail.
Evening exercise is fine, except a hard session at bedtime#
The old rule against evening exercise does not hold up. Across 23 studies in healthy adults, a session in the evening did not harm sleep, if anything the opposite, although vigorous exercise ending within an hour of bedtime might delay it.10
The analysis, from ETH Zurich, found slightly more deep sleep after evening exercise than after a rest evening. Falling asleep, total sleep and sleep efficiency might be impaired only after vigorous exercise that ended an hour or less before bed.10 Over the longer term, regular exercise brings small benefits for total sleep time and moderate benefits for sleep quality.11
Lower the lights for the last three hours#
Ordinary room light in the evening is enough to delay and shorten the night-time rise of melatonin, which is why an expert consensus recommends keeping the light reaching your eyes low for the last three hours before bed.1213
In laboratory studies of 116 young adults, spending the eight hours before bed in room light rather than dim light delayed the start of melatonin release in 99% of participants and shortened its duration by about 90 minutes.12
The 2022 consensus recommends that, from at least three hours before bedtime, the light at the eye stay at or below a melanopic level of 10 lux, a measure of how strongly light stimulates the body clock.13 In practice we translate that as lamps instead of ceiling lights, warm and low. Screens are part of the same picture; our guide to screens and light looks at how large their effect really is.
The last stretch is about temperature and a quieter mind. Two simple habits have some evidence behind them, and the bedroom itself does the rest.
A warm shower one to two hours before bed may help#
Warming up can help you cool down. In pooled studies, a warm bath or shower at 40 to 42.5 °C, one to two hours before bed and for as little as ten minutes, shortened the time to fall asleep, and warm water went with better rated sleep.14
The authors link it to body temperature: warmed hands and feet release more heat, so the core temperature falls further. They also caution that the research is still scarce, especially on the best timing and duration.14
Five minutes of writing can quiet a busy mind#
A busy mind settles more easily once its tasks are parked. In a sleep-laboratory study, five minutes writing a specific to-do list helped young adults fall asleep faster than writing about what they had done, and relaxation therapy is a recognised insomnia technique.151
The 57 participants, aged 18 to 30, were randomly assigned to one kind of writing before a night in the sleep laboratory, and the more specific their to-do list, the faster they fell asleep.15 It is one small study in young adults, but it is free and easy to try.
The American Academy of Sleep Medicine suggests relaxation therapy as a single technique for chronic insomnia.1 Slow breathing, a body scan or gentle stretching are simple ways in; choose the one you will actually do.
Keep the bedroom cool and dark#
The bedroom finishes what the evening started. Heat in bed increases waking and reduces deep and dream sleep, and an expert consensus recommends keeping light during sleep at a very low level.1613
In real-life conditions with bedding and nightclothes, heat exposure increases wakefulness and reduces deep and REM sleep, and humid heat adds to the load.16 No single temperature is proven, so a cool, airy room with bedding you can adjust is the sensible default.
The same light consensus recommends that light in the sleep environment stay below a melanopic level of 1 lux.13 Blackout curtains or an eye mask, and no glowing devices in view, are a simple start.
Here is how the pieces fit into one ordinary evening, the signs that a routine is not enough, and where we fit.
One ordinary evening, step by step#
Put together, the evidence fits into an ordinary evening worked back from a fixed wake-up time: caffeine finished six hours before bed, dinner two to three hours before, lights lowered for the last three, a warm shower, and a short to-do list.
| Before a 23:00 bedtime | What to do |
|---|---|
| By 17:00 | Last coffee, black tea or cola5 |
| Through the evening | Exercise if you like; finish hard sessions more than an hour before bed10 |
| By 20:00 to 21:00 | Dinner finished, earlier if reflux wakes you9 |
| From 20:00 | Lamps instead of ceiling lights, screens turned down13 |
| 21:00 to 22:00 | A warm shower or bath, if you enjoy one14 |
| Before lights out | Five minutes to write tomorrow’s to-do list15 |
| Every morning | Same wake-up time, daylight soon after3 |
When good habits are not enough, see a doctor#
Habits have limits. Poor sleep that lasts three months or more despite a good routine, or comes with loud snoring, gasping, pauses in breathing, sleepiness while driving or low mood, needs a doctor; chronic insomnia is best treated with CBT-I.1718
The European Insomnia Guideline recommends CBT-I as the first-line treatment for chronic insomnia in adults of any age.17 Sleep apnoea is common and easily missed, because only 15 to 50% of people with it in the general population report excessive sleepiness.18
We build a routine that fits your real evenings#
Our work sits alongside medical care, never in its place. We help you build a routine that fits your real evenings, with work, family and social life included, and work with you on the sleep, nutrition, movement and stress habits behind it.
A routine on paper is easy; keeping it on a Tuesday with a late meeting is the hard part. We start from your wake-up time and your actual evenings, change one thing at a time, and look at two weeks of notes or tracker data together.
At FunctionAlps we work on sleep, nutrition, movement, stress and digestion, coordinated with your doctor when something needs medical care. If you would like help building yours, talk it through with our care team on a free call. It is a coaching conversation, not a medical consultation.
Quick answers12 questions this guide covers, in short
Does an evening routine actually help you sleep?
It can support ordinary sleep, but it is not a treatment for chronic insomnia: the American Academy of Sleep Medicine advises against relying on sleep hygiene advice alone and recommends cognitive behavioural therapy for insomnia (CBT-I) instead.1 Read the section
Why does a fixed wake-up time matter for an evening routine?
Because light after waking sets your body clock, and regular timing matters in itself: in a large study, the least regular sleepers had a higher death rate than more regular ones, although that is an association, not proof.34 Read the section
When should you stop coffee and alcohol before bed?
Stop substantial caffeine at least six hours before bed, since it still disturbed sleep at that distance in a study, and notice what alcohol does to you, because at every dose studied it disrupts the second half of the night.56 Read the section
How long before bed should you eat dinner?
No ideal time has been proven. The evidence on meal timing and sleep is weak and mixed, so two to three hours before bed is a sensible default, and a firmer rule if reflux wakes you at night.789 Read the section
Is it bad to exercise in the evening?
Generally not. A meta-analysis of 23 studies found that evening exercise did not harm sleep in healthy adults, if anything the opposite, although vigorous exercise ending within an hour of bedtime might delay sleep.10 Read the section
Why should you dim the lights in the evening?
Because ordinary room light in the evening delays and shortens the night-time release of melatonin, and an expert consensus recommends keeping the light reaching your eyes low for the last three hours before bed.1213 Read the section
Does a warm bath or shower before bed help you sleep?
It may. A meta-analysis found that a warm bath or shower at 40 to 42.5 °C, taken one to two hours before bed for as little as ten minutes, shortened the time to fall asleep, and warm water was linked with better rated sleep quality, though the studies were few.14 Read the section
How do you stop your mind racing at bedtime?
Give the thoughts somewhere to go. In a sleep-laboratory study, writing a specific to-do list for five minutes before bed helped young adults fall asleep faster than writing about what they had already done, and relaxation therapy is a recognised technique for insomnia.151 Read the section
What is the best bedroom for sleep?
A cool, dark one. Heat in bed increases waking and reduces deep and dream sleep, and an expert consensus recommends keeping light during sleep at a very low level.1613 Read the section
What does a good evening routine look like?
Work back from a fixed wake-up time: caffeine finished six hours before bed, dinner two to three hours before, lights lowered for the last three hours, a warm shower one to two hours before, and a short to-do list before lights out. Read the section
When is an evening routine not enough?
When poor sleep has lasted three months or more despite good habits, or comes with loud snoring, gasping, pauses in breathing, sleepiness while driving or low mood. These need a doctor, and chronic insomnia is best treated with CBT-I.1718 Read the section
Where does a functional approach fit for an evening routine?
Alongside medical care, never instead of it. We help you build a routine that fits your real evenings, and work with you on the sleep, nutrition, movement and stress habits behind it. Read the section
- Edinger JD, Arnedt JT, Bertisch SM, et al. Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline. J Clin Sleep Med. 2021;17(2):255-262. PMID : 33164742. Link
- Baron KG, Abbott S, Jao N, Manalo N, Mullen R. Orthosomnia: are some patients taking the quantified self too far? J Clin Sleep Med. 2017;13(2):351-354. PMID : 27855740. Link
- Blume C, Garbazza C, Spitschan M. Effects of light on human circadian rhythms, sleep and mood. Somnologie (Berl). 2019;23(3):147-156. PMID : 31534436. Link
- Windred DP, Burns AC, Lane JM, et al. Sleep regularity is a stronger predictor of mortality risk than sleep duration: a prospective cohort study. Sleep. 2024;47(1):zsad253. PMID : 37738616. Link
- Drake C, Roehrs T, Shambroom J, Roth T. Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. J Clin Sleep Med. 2013;9(11):1195-1200. PMID : 24235903. Link
- Ebrahim IO, Shapiro CM, Williams AJ, Fenwick PB. Alcohol and sleep I: effects on normal sleep. Alcohol Clin Exp Res. 2013;37(4):539-549. PMID : 23347102. Link
- Chung N, Bin YS, Cistulli PA, Chow CM. Does the proximity of meals to bedtime influence the sleep of young adults? A cross-sectional survey of university students. Int J Environ Res Public Health. 2020;17(8):2677. PMID : 32295235. Link
- Gu C, Brereton N, Schweitzer A, et al. Metabolic effects of late dinner in healthy volunteers: a randomized crossover clinical trial. J Clin Endocrinol Metab. 2020;105(8):2789-2802. PMID : 32525525. Link
- Katz PO, Dunbar KB, Schnoll-Sussman FH, Greer KB, Yadlapati R, Spechler SJ. ACG clinical guideline for the diagnosis and management of gastroesophageal reflux disease. Am J Gastroenterol. 2022;117(1):27-56. PMID : 34807007. Link
- Stutz J, Eiholzer R, Spengler CM. Effects of evening exercise on sleep in healthy participants: a systematic review and meta-analysis. Sports Med. 2019;49(2):269-287. PMID : 30374942. Link
- Kredlow MA, Capozzoli MC, Hearon BA, et al. The effects of physical activity on sleep: a meta-analytic review. J Behav Med. 2015;38(3):427-449. PMID : 25596964. Link
- Gooley JJ, Chamberlain K, Smith KA, et al. Exposure to room light before bedtime suppresses melatonin onset and shortens melatonin duration in humans. J Clin Endocrinol Metab. 2011;96(3):E463-E472. PMID : 21193540. Link
- Brown TM, Brainard GC, Cajochen C, et al. Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults. PLoS Biol. 2022;20(3):e3001571. PMID : 35298459. Link
- Haghayegh S, Khoshnevis S, Smolensky MH, Diller KR, Castriotta RJ. Before-bedtime passive body heating by warm shower or bath to improve sleep: a systematic review and meta-analysis. Sleep Med Rev. 2019;46:124-135. PMID : 31102877. Link
- Scullin MK, Krueger ML, Ballard HK, Pruett N, Bliwise DL. The effects of bedtime writing on difficulty falling asleep: a polysomnographic study comparing to-do lists and completed activity lists. J Exp Psychol Gen. 2018;147(1):139-146. PMID : 29058942. Link
- Okamoto-Mizuno K, Mizuno K. Effects of thermal environment on sleep and circadian rhythm. J Physiol Anthropol. 2012;31(1):14. PMID : 22738673. Link
- Riemann D, Espie CA, Altena E, et al. The European Insomnia Guideline: an update on the diagnosis and treatment of insomnia 2023. J Sleep Res. 2023;32(6):e14035. PMID : 38016484. Link
- Gottlieb DJ, Punjabi NM. Diagnosis and management of obstructive sleep apnea: a review. JAMA. 2020;323(14):1389-1400. PMID : 32286648. Link
Articles published by FunctionAlps are educational and written within ASCA and EMR scope. They do not replace personalised clinical advice. When findings warrant medical evaluation, we coordinate with a referring physician.