A Bedtime Routine for Adults That Works, Step by Step

A bedtime routine for adults works when it protects the same wake time seven days a week, lowers light and stimulation for the last 90 minutes, and keeps bed for sleep rather than for lying awake. In 60,977 UK Biobank adults wearing wrist monitors, regular sleepers had a 20% to 48% lower risk of dying during follow-up than the least regular fifth, and regularity predicted mortality more strongly than hours slept.¹ Each step carries its trial; the timed routine is practical guidance. The wider picture is in the Wellgard sleep guide.

Does a bedtime routine help adults sleep, and when should it start?

It helps, within limits. Across 15 studies, sleep hygiene education alone improved diary-recorded sleep efficiency by about 5% and the Pittsburgh Sleep Quality Index by two points, only on self-report; cognitive behavioural therapy for insomnia (CBT-I) added about 8% more.² The NHS says: "Insomnia usually gets better by changing your sleeping habits."³

The NHS says to "relax at least 1 hour before bed – for example, take a bath or read a book".³ A 2022 expert consensus on indoor lighting recommends, in its full text, at most 10 lux of melanopic equivalent daylight illuminance from three hours before bed: lamps, not ceiling lights.⁴ Ninety minutes sits between the two. As practical guidance, for an 11pm bedtime and a 7am alarm:

1. By 2pm: last caffeine (step 1).
2. By 9.30pm: work closed, exercise finished, lamps on and ceiling lights off (steps 2 and 4).
3. 9.30pm to 10pm: warm bath or shower (step 3).
4. 10pm: hot drink, tomorrow's list, phone charging outside the bedroom (steps 5 and 6).
5. 10pm to 11pm: a paper book in lamp light; bed when sleepy, not by the clock.
6. 7am, every day: alarm, curtains open, up (step 7).

Step 1: when should the last coffee be?

In a 2023 meta-analysis of 24 studies, caffeine cut total sleep by 45 minutes and sleep efficiency by 7%, added 9 minutes to falling asleep and 12 minutes awake in the night, and took 11.4 minutes off deep sleep. To protect total sleep, a 107 mg coffee needed to be at least 8.8 hours before bed, a 217.5 mg pre-workout serving 13.2 hours.⁵ That is a modelled cut-off, and sensitivity varies widely. The NHS floor: "do not smoke or drink alcohol, tea or coffee at least 6 hours before going to bed".³ Cup sizes and half-life: the caffeine and sleep page.

Step 2: is it bad to exercise in the evening?

Not for most people. A 2019 meta-analysis of 23 studies in healthy adults found a single evening session did not harm sleep, adding 7.7 minutes before the first REM period and 1.3 percentage points of slow-wave sleep; only vigorous exercise ending an hour or less before bed might impair falling asleep, total sleep and efficiency.⁶ The NHS gives the cautious version: "do not exercise at least 4 hours before bed".³

Step 3: does a warm bath or shower help you sleep?

Yes, if it is timed. A 2019 review found 17 studies of warm bathing or showering before bed, 13 poolable. Water at 40 to 42.5 °C went with better self-rated sleep quality and higher sleep efficiency, and taken 1 to 2 hours before bed, for as little as 10 minutes, it significantly shortened the time to fall asleep; the effect runs through a faster fall in core temperature.⁷ The research base is thin; a bath at lights-out misses the window.

Step 4: dim the room, not just the phone

In 116 healthy volunteers aged 18 to 30, room light under 200 lux in the eight hours before bed, against dim light under 3 lux, delayed melatonin onset in 99% of individuals and shortened its duration by about 90 minutes.⁸ In a laboratory study, reading on a light-emitting e-reader before bed meant longer to fall asleep, less melatonin, a later body clock and lower next-morning alertness than a printed book.⁹ A phone's warm-screen night setting did not rescue it: in a randomised trial of 167 adults aged 18 to 24 using a phone for the hour before bed for seven nights, sleep did not differ significantly between the warm setting, the normal screen and no phone; only a post-hoc analysis of those already sleeping over 6.8 hours favoured no phone.¹⁰ The NHS: "do not watch television or use devices, like smartphones, right before going to bed, because the blue light makes you more awake".³ See tired but wired.

Step 5: what should the hot drink be?

A hot drink marks the wind-down, and the NHS Every Mind Matters page suggests one: "You could try a warm milky drink or herbal tea instead."¹¹ Chamomile, lemon balm, tart cherry, warm milk and sleep powders each have their trials on the what to drink before bed page. If a supplement is part of your evening, magnesium's authorised wording is that it contributes to normal psychological function and to the reduction of tiredness and fatigue; what the trials found is on that page. One small mug, an hour before bed.

Step 6: write tomorrow down and set a lights-out time

The NHS suggests: "If you often worry in bed, try making a list of things you need to do the next day before you go to sleep."¹¹ Across 15 randomised trials, CBT-I had moderate-to-large effects on worry (Hedges' g -0.41 to -0.71) but small, unreliable effects on rumination (g -0.13).¹² For the racing-mind version, see how to switch off your mind at night.

Bedtime procrastination, going to bed later than intended when nothing stops you, was described in a 2014 survey of 177 adults and went with insufficient sleep beyond what demographics and self-regulation explained; the evidence is correlational, and the "revenge" prefix is social media's.¹³ The fix: a lights-out alarm, and the phone charging in another room.

Step 7: the same wake time, including weekends

Regularity, not duration, predicted mortality in the 60,977 UK Biobank adults.¹ In 73,513 UK adults followed for eight years, catching up two or more hours at weekends was not associated with lower mortality (hazard ratio 1.17, 95% confidence interval 0.97 to 1.41, not significant) or cardiovascular disease (1.05, 0.94 to 1.18, not significant).¹⁴ The NHS: "wake up and get out of bed at the same time every day" and "do not sleep in after a bad night's sleep – stick to your regular sleeping hours instead".³ See the clocks going back and your sleep.

What is the 10-3-2-1 rule, and does it hold up?

No caffeine 10 hours before bed, no food or alcohol 3 hours before, no work 2 hours before, no screens 1 hour before. None of it comes from a trial (viral sleep rules and tricks), but the shape is right. The 10 is stricter than the NHS six and close to the modelled 8.8 hours.^3,5 The 3 has no trial; the NHS says "do not eat a big meal late at night" and to avoid alcohol and nicotine "1 to 2 hours before bed".^3,11 The 2 is unmeasured. The 1 matches the NHS advice to avoid phones, tablets and computers "for an hour before bed",¹¹ though room lights matter too.⁸

What if you are still awake, or the routine does not fix it?

Do not lie there. The NHS says "only go to bed when you're sleepy", and Every Mind Matters adds that "if you're still awake after around 20 minutes, get up and sit somewhere comfortable" and "go back to bed when you feel sleepy".^3,11 This is stimulus control. In a component network meta-analysis of 241 randomised trials with 31,452 adults, stimulus control was associated with remission (incremental odds ratio 1.43, 95% confidence interval 1.00 to 2.05) and with better sleep quality, efficiency and time to fall asleep; sleep hygiene education alone was not essential (1.01, 0.77 to 1.32), and relaxation procedures were potentially counterproductive (0.81, 0.64 to 1.02, not significant).¹⁵

If the routine has not helped, the NHS says to see a GP when "changing your sleeping habits has not helped your insomnia" or "you've had trouble sleeping for months"; a GP may offer cognitive behavioural therapy.³ More on when to see a GP about sleep.

Frequently asked questions

What should you never do right before bed?

The NHS insomnia page's don't list runs: alcohol, tea or coffee in the six hours before bed; a big meal late at night; exercise in the four hours before bed; television or devices right before bed; "do not nap during the day"; "do not drive when you feel sleepy"; and sleeping in after a bad night.³

Is it bad to eat before bed?

The NHS says "do not eat a big meal late at night", and Every Mind Matters that "eating large meals close to bedtime may make it harder to fall asleep".^3,11 Neither sets a number of hours (foods that help you sleep).

What is revenge bedtime procrastination?

Going to bed later than intended when nothing stops you. In the 2014 survey of 177 adults that introduced the term, it went with reporting insufficient sleep, though the design cannot show cause.¹³ The lights-out alarm is aimed at it.

Sources

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2. Chung KF. Sleep hygiene education as a treatment of insomnia: a systematic review and meta-analysis. Fam Pract 2018. PubMed 29194467
3. NHS. Insomnia. nhs.uk/conditions/insomnia
4. Brown TM. Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults. PLoS Biol 2022. PubMed 35298459
5. Gardiner C. The effect of caffeine on subsequent sleep: a systematic review and meta-analysis. Sleep Med Rev 2023. PubMed 36870101
6. Stutz J. Effects of evening exercise on sleep in healthy participants: a systematic review and meta-analysis. Sports Med 2019. PubMed 30374942
7. Haghayegh S. Before-bedtime passive body heating by warm shower or bath to improve sleep: a systematic review and meta-analysis. Sleep Med Rev 2019. PubMed 31102877
8. Gooley JJ. Exposure to room light before bedtime suppresses melatonin onset and shortens melatonin duration in humans. J Clin Endocrinol Metab 2011. PubMed 21193540
9. Chang AM. Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. Proc Natl Acad Sci USA 2015. PubMed 25535358
10. Duraccio KM. Sleep Health 2021. PubMed 33867308
11. NHS Every Mind Matters. How to fall asleep faster and sleep better. nhs.uk/every-mind-matters
12. Ballesio A. Does cognitive behaviour therapy for insomnia reduce repetitive negative thinking and sleep-related worry beliefs? A systematic review and meta-analysis. Sleep Med Rev 2021. PubMed 32992228
13. Kroese FM. Bedtime procrastination: introducing a new area of procrastination. Front Psychol 2014. PubMed 24994989
14. Chaput JP. Device-measured weekend catch-up sleep, mortality, and cardiovascular disease incidence in adults. Sleep 2024. PubMed 38895883
15. Furukawa Y. Components and delivery formats of cognitive behavioral therapy for chronic insomnia in adults: a systematic review and component network meta-analysis. JAMA Psychiatry 2024. PubMed 38231522