Sleep hygiene tips: a checklist that works, and its limits
Sleep hygiene is the set of daily habits and bedroom conditions that make sleep easier: a fixed wake-up time, morning light, no caffeine after about midday, little or no alcohol near bed, a cool, dark, quiet room, and a calm last hour. These habits help most people sleep a little better, and they are the base every sleep plan is built on.
What most lists leave out: for long-running insomnia, good hygiene on its own rarely fixes it. The American Academy of Sleep Medicine advises against using sleep hygiene as the only treatment for chronic insomnia. Below is a checklist with the reason and a number behind each tip, an order to change things in over 2 weeks, the myths, and how to tell when you need more than hygiene.
What is sleep hygiene?
The term was coined by the sleep researcher Peter Hauri in 1977 for the everyday things that help or hurt sleep. It covers four areas:
- Timing: when you wake, go to bed and nap.
- What you take in: caffeine, alcohol, nicotine, food and drink, and when.
- Light and activity: daylight, exercise, screens and the last hour of the evening.
- The bedroom: temperature, dark, noise, the bed, and what the bed is used for.
None of it is a treatment in the medical sense. It removes things that work against sleep, so your body's own sleep drive and body clock can do their job.
Does sleep hygiene actually work?
Yes and no, and it helps to know which before you start.
- For people who sleep fairly well: fixing a habit that clearly disturbs sleep (a late coffee, a hot room, an irregular wake time) often makes a noticeable difference.
- For chronic insomnia (trouble sleeping at least 3 nights a week for 3 months or more): reviews find hygiene alone gives small gains. The 2021 American Academy of Sleep Medicine guideline suggests clinicians not use it as a single treatment, and the American College of Physicians recommends cognitive behavioural therapy for insomnia (CBT-I) as the first treatment instead.
- Why the gap: once insomnia sets in, it's usually kept going by too much time awake in bed, an irregular schedule and a mind that has learned to be alert in bed. Hygiene doesn't touch those. CBT-I does, mainly through a set sleep window and the rules of stimulus control.
So treat this checklist as the floor, not the ceiling. Get the floor right, then add the parts that do the heavy lifting if you still lie awake.
The sleep hygiene checklist
Go down the list and tick what you already do. The ones you can't tick are your starting points.
| Habit | The target | Why it matters |
|---|---|---|
| Wake-up time | Same time every day, weekends within about 30 minutes | Your body clock sets itself mostly from when you wake and see light. A fixed wake time does more than a fixed bedtime. |
| Morning light | Outdoor light within an hour of waking, 15 to 30 minutes | Bright morning light anchors the clock and helps you feel sleepy at a steady time at night. Daylight, even cloudy, is far brighter than indoor light. |
| Caffeine | None after about midday, or at least 8 hours before bed | Caffeine's effect lasts many hours. In one study, a dose taken 6 hours before bed still cut sleep by more than an hour. |
| Alcohol | None in the 3 to 4 hours before bed, and less overall | It can help you nod off, then breaks up sleep in the second half of the night. |
| Nicotine | None in the evening or at night wakings | Nicotine is a stimulant, and withdrawal during the night can wake smokers. |
| Big meals | Finish the main meal 2 to 3 hours before bed | A full stomach and reflux make lying down uncomfortable. A small snack is fine if hunger keeps you up. |
| Fluids | Ease off in the last 1 to 2 hours | Fewer trips to the bathroom at 3 a.m. |
| Exercise | Most days, ending at least an hour before bed | Regular activity is linked with deeper, longer sleep. Moderate evening exercise doesn't harm sleep for most people; hard sessions right before bed can. |
| Naps | None, or under 30 minutes before mid-afternoon | Long or late naps spend the sleep pressure you need at night. |
| Last hour | Dim lights, a calm routine, work and hard talks done | Gives the body room to slow down. See our bedtime routine for adults. |
| Screens | Off or dimmed in the last 30 to 60 minutes, phone charged outside the bedroom | The content keeps you awake more than the light does, and the phone in reach invites checking at night. |
| Bedroom temperature | Cool, roughly 60 to 67°F (15 to 19°C) | Your core temperature drops as you fall asleep. A warm room works against it. |
| Dark | Dark enough that you can't read by it; blackout blind or eye mask | Light at night can wake you and shifts the body clock. |
| Noise | Quiet, or steady sound (fan, earplugs) | Sudden noises cause brief wakings, even ones you don't remember. |
| Clock | Turned away from you | Checking the time at night adds worry and makes it harder to drift off. |
| Bed use | Bed for sleep and sex only; get up if you can't sleep | Keeps the bed linked with sleeping, not with lying awake. This is the step most hygiene lists skip. |
Timing tips: the ones that matter most
Fix your wake-up time first
If you change only one thing, make it this. Pick a time you can keep every day, including weekends and after a bad night, and set an alarm. A late lie-in after a poor night feels kind but shifts your clock later and lowers sleep pressure for the next night, so the bad nights keep coming. If your times have drifted a long way, our guide on how to fix your sleep schedule walks through moving it with clock times.
Go to bed when sleepy, not just when it's time
A fixed bedtime sounds tidy, but going to bed before you're sleepy just adds time awake in bed. Keep the wake time fixed, and let bedtime be "when my eyes get heavy, and not before" a set earliest time. Tired is not the same as sleepy: if you're worn out but wide awake, read why you can't fall asleep even when you're tired.
Don't spend extra time in bed
Many people who sleep badly go to bed earlier and stay later to "catch up". It backfires: more hours in bed spread the same amount of sleep thinner, with more waking. Cleveland Clinic's advice is the right instinct: stay in bed only as long as you need to feel rested.
Caffeine, alcohol and food
How late can you have caffeine?
Caffeine's half-life in adults averages around 5 hours, and in some people it's much longer. In a 2013 study in the Journal of Clinical Sleep Medicine, 400 mg of caffeine (about two to three large coffees) taken 6 hours before bed still reduced total sleep by more than an hour, measured at home. A simple rule: no coffee, energy drinks, strong tea or cola after midday, or at least 8 hours before bed. Remember the hidden sources: dark chocolate, some painkillers and pre-workout drinks.
Alcohol: the nightcap that wakes you up
Alcohol is sedating at first, so it can feel like it helps. Research reviews find it shortens the time to fall asleep and deepens the first part of the night, then disturbs the second half as it wears off: lighter sleep, more waking, sweating and bathroom trips. If you wake at 3 or 4 a.m., look at the evening drinks first. Keeping the last drink at least 3 to 4 hours before bed helps; fewer drinks help more.
Food and drink
- Eat the main meal 2 to 3 hours before bed, especially if you get heartburn.
- A small snack is fine if hunger keeps you awake. Something plain (toast, yoghurt, a banana) beats a heavy or spicy one.
- Cut back on drinks in the last hour or two if you wake to use the bathroom.
- No single food is proven to make you sleep. Lists of "sleep foods" overstate small studies.
Light, screens and exercise
Morning light beats evening blue-light rules
The light you get in the morning sets your clock more strongly than most evening changes. Have breakfast by a window, walk outside, or take the first call standing on the porch. In the evening, dim the room lights an hour or so before bed.
What about screens?
A 2015 study in PNAS found that reading on a light-emitting tablet for hours before bed, compared with a printed book, delayed the release of melatonin and made it take longer to fall asleep. Real-life effects of a phone at normal brightness are smaller than that study's set-up, and newer reviews are mixed. The bigger problem is usually what's on the screen: email, news, a game, scrolling that runs an hour past bedtime. Practical rule: end anything that excites, angers or worries you at least 30 to 60 minutes before bed, turn brightness down, and charge the phone outside the bedroom so it isn't there at 2 a.m.
Exercise
Regular physical activity is one of the more reliable aids to sleep. A 2019 review in Sports Medicine found evening exercise didn't harm sleep in healthy adults, with the exception of vigorous exercise ending within about an hour of bedtime. Walk, swim, lift or garden most days; just leave the hardest session for earlier in the day.
The bedroom
- Cool: many sleep groups suggest roughly 60 to 67°F (15 to 19°C). Use lighter covers you can throw off rather than heating the room. If you get night sweats, see our guide on perimenopause insomnia for how to set up the bed.
- Dark: blackout blinds or a soft eye mask. Cover small LEDs with tape.
- Quiet: earplugs, or a fan or white-noise machine to cover sudden sounds. A snoring partner may need their own fix (and a check for sleep apnea).
- Comfortable: a mattress and pillow that don't leave you sore. You don't need an expensive one, just one that doesn't wake you.
- For sleep: no work, TV or long phone sessions in bed. If you live in one room, put a chair by the bed and do everything awake in the chair.
- No clock in sight: set the alarm and turn it to the wall.
Sleep hygiene myths
- "Everyone needs 8 hours." Most adults need 7 to 9, and it varies. Chasing 8 by lying in bed longer usually makes sleep worse.
- "You can catch up at the weekend." A long lie-in shifts your clock and leads to a hard Sunday night.
- "Alcohol helps you sleep." It helps you fall asleep, then breaks up the rest of the night.
- "If you can't sleep, stay in bed and rest." Lying awake trains your brain to be awake in bed. Get up after what feels like 20 minutes.
- "A perfect routine guarantees sleep." Sleep can't be forced. Hygiene sets things up; trying hard to sleep is itself a cause of insomnia.
A 2-week plan to put it in place
Changing everything at once rarely lasts. Change the biggest levers first, then the rest. Keep a simple diary each morning: time to bed, rough time asleep, wakings, time up.
| Days | Change |
|---|---|
| 1 to 3 | Pick and keep your wake-up time, every day. Get outside light within an hour of waking. |
| 4 to 5 | Caffeine cut-off at midday. Move the last alcoholic drink earlier, or skip it on weeknights. |
| 6 to 7 | Bedroom: cooler, darker, clock turned round, phone charging outside. |
| 8 to 10 | A 30 to 60 minute wind-down with lights dimmed. Bed only when sleepy. |
| 11 to 14 | Add the get-up rule: awake for what feels like 20 minutes, out of bed to a chair, back when sleepy. Look at your diary: are you in bed much longer than you sleep? |
Expect the first week to feel no different, or slightly worse while you get used to the fixed wake time. Judge it after 2 weeks, from the diary, not from one night.
When sleep hygiene isn't enough
If you've kept the checklist for 2 to 3 weeks and still lie awake most nights, the cause is probably not your habits but the insomnia cycle itself. Signs:
- You spend much more time in bed than asleep (say, 8 hours in bed, 5 to 6 asleep).
- You feel sleepy on the sofa, then wide awake as soon as you lie down.
- You dread bedtime, or your mind races the moment the light goes off (see our guide on what to do when your brain won't shut off).
That's when the CBT-I parts help: a set sleep window that matches the time you really sleep, grown in 15-minute steps, plus the stimulus control rules. The free 2-minute sleep quiz works out how much time you're awake in bed and a starting sleep window from your answers.
See a doctor if
- you snore loudly, gasp or stop breathing in your sleep (someone may have noticed), or wake with headaches;
- you feel a strong urge to move your legs in the evening;
- you fall asleep in the day without meaning to, or while driving;
- poor sleep came with low mood, anxiety, pain, a new medicine or another health change;
- you've had trouble sleeping most nights for 3 months or more and nothing has helped.
Frequently asked questions
What are the most important sleep hygiene tips?
A fixed wake-up time every day, outdoor light in the morning, no caffeine after midday, little or no alcohol near bed, and a cool, dark bedroom used only for sleep. Those five do most of the work.
Is sleep hygiene enough to treat insomnia?
Usually not for insomnia that has gone on for months. Sleep medicine guidelines recommend CBT-I, which includes hygiene but adds a sleep window and stimulus control.
How long does it take for sleep hygiene to work?
Some changes, like cutting late caffeine, can help within days. Habits that reset your body clock usually take 1 to 2 weeks of steady practice. Judge it over 2 weeks with a sleep diary.
What temperature should my bedroom be?
Cool. Many sleep groups suggest about 60 to 67°F (15 to 19°C). Find the cool end you're comfortable in, with covers you can adjust.
Should I stop using my phone before bed?
Stop anything that stirs you up 30 to 60 minutes before bed, turn the brightness down, and keep the phone out of the bedroom overnight. A calm show on low brightness is less of a problem than work email.
Is it bad to nap?
A short nap (under 30 minutes, before mid-afternoon) is fine for most people. If you have trouble sleeping at night, skip naps until night sleep improves.
Start tonight
Pick your wake-up time and set the alarm for every day of the week. Move tomorrow's last coffee to before midday, turn the clock away, and put the phone charger in the kitchen. If you've done all that before and still lie awake, the free sleep quiz shows where your nights are going. For falling asleep, schedules and night waking, see all our sleep guides.
Sources: Hauri P, The sleep disorders, Upjohn, 1977 (origin of the term). Edinger JD et al., Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline, Journal of Clinical Sleep Medicine, 2021. Qaseem A et al., Management of chronic insomnia disorder in adults, American College of Physicians, Annals of Internal Medicine, 2016. Irish LA et al., The role of sleep hygiene in promoting public health: a review of empirical evidence, Sleep Medicine Reviews, 2015. Drake C et al., Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed, Journal of Clinical Sleep Medicine, 2013. Ebrahim IO et al., Alcohol and sleep I: effects on normal sleep, Alcoholism: Clinical and Experimental Research, 2013. Chang AM et al., Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness, PNAS, 2015. Stutz J et al., Effects of evening exercise on sleep in healthy participants: a systematic review and meta-analysis, Sports Medicine, 2019. Centers for Disease Control and Prevention, Tips for better sleep. This guide is education, not medical advice.