What to do about trouble falling asleep
Lying there for an hour unable to sleep: the mechanism behind it, and what has evidence compared with tips that merely sound sensible.
Key points
- Over 30 minutes to fall asleep is regarded as prolonged. Under 20 minutes is normal for most people.
- ⭐ The most common cause is not a lack of sleepiness but excessive AROUSAL: the body is tired while the wake system is still switched on.
- The most effective thing: go to bed only when you are GENUINELY sleepy, and leave the bed if you cannot sleep.
- ⛔ Lying there "trying to sleep" makes the problem worse, even though it is the most natural response.
Tiredness and sleepiness are not the same
This distinction is the key to the whole page. Tiredness is a lack of energy: you are wrecked but lying down produces no sleep. Sleepiness is a tendency to fall into sleep: eyelids closing, nodding off when sitting still.
People with trouble falling asleep are almost always very tired but not genuinely sleepy when they go to bed. Going to bed in that state creates time spent turning over, and time spent turning over in bed is exactly what teaches the brain to link the bed with wakefulness.
Why the mind will not stop
When you lie down, every external stimulus disappears and there is nothing left to direct attention at. For someone with high arousal, that gap is filled immediately by thought: what has not been done, what happened, and very often the fact of not sleeping.
That is why the advice "stop thinking" never works. Not thinking is not something anyone can do. What can be done is giving attention something else to hold on to, or not lying down before you are sleepy.
What the evidence supports
- Go to bed only when genuinely sleepy, not when it is bedtime. If you are not sleepy, stay in another room doing something undemanding in dim light.
- Leave the bed after about 20 minutes awake. Do not check the clock to count. An estimate is enough. Go to another room and return when sleepy. You may have to repeat this several times in a night, and that is normal.
- Keep the same wake time every day, even after a bad night. This is the strongest signal for anchoring the body clock.
- Drop daytime sleep during the period you are working on this, to concentrate sleep pressure on the night.
- Structured relaxation techniques, slow breathing or progressive muscle relaxation, done before getting into bed rather than in bed as a way of trying to sleep.
Three common tips and what the evidence actually says
| Tip | Evidence | Put accurately |
|---|---|---|
| A warm bath 1 to 2 hours before bed | Fair | The mechanism makes sense: the body has to lower its core temperature to fall asleep, and warming then cooling helps that. A bath immediately before getting into bed does not |
| Counting sheep | Weak | Small studies suggest imagining a specific scene works better than counting. What they share is giving attention something to hold |
| Warm milk, bananas, lotus seeds | Weak | The amount of active compound in food is far too small for a pharmacological effect. Any benefit comes from the ritual and the comfort, and that has value too |
What order to apply these in, if you can only do a few
- A fixed wake time every day. The highest effect for the effort involved, and it asks nothing extra of your evening.
- Do not get into bed before you are sleepy. Accept going to bed later than usual. Your sleep time will not shorten the way you fear; usually the opposite.
- Leave the bed when you cannot sleep. The hardest of the three, and the one that breaks the bed-wakefulness link.
These three are the core of stimulus control, one of the two strongest behavioural components of CBT-I. They need no equipment, cost nothing, and can start tonight.
When trouble falling asleep signals something else
| Accompanying sign | What to think about |
|---|---|
| A restless, hard-to-describe sensation in the legs, an urge to move, relieved by walking | Restless legs syndrome, often with iron deficiency |
| Sleepiness arriving very late, but sleeping well if allowed your own schedule | Delayed sleep-wake phase disorder, not insomnia |
| Racing worry about many things, tension, unable to relax all day | An anxiety disorder. Take the GAD-7 |
| Racing heart, sweating, weight loss, heat intolerance | Overactive thyroid. Needs a blood test |
| The insomnia started after beginning a new medicine | A medication effect. Tell your doctor, do not stop it yourself |
Frequently asked questions
- How long is normal to take falling asleep?
- Most people fall asleep within 10 to 20 minutes. Regularly taking over 30 minutes is regarded as prolonged. But do not check the clock to measure it, because that itself makes sleeping harder.
- I left the bed and still was not sleepy, and that went on until morning. What then?
- The first few nights of this technique are usually worse, and that is anticipated. It concentrates sleep pressure for the following night. In exchange, it breaks exactly the bed-wakefulness link that is holding the problem.
- Is listening to music or a podcast to fall asleep acceptable?
- Yes, if it helps and does not make you more awake. Choose something without a gripping story, set a sleep timer, and avoid a bright screen.
References
- Behavioral and psychological treatments for chronic insomnia disorder in adults: an AASM clinical practice guideline - American Academy of Sleep Medicine, 2021 · DOI 10.5664/jcsm.8986
- Management of Chronic Insomnia Disorder in Adults: A Clinical Practice Guideline from the American College of Physicians - American College of Physicians, 2016 · DOI 10.7326/M15-2175
- The European Insomnia Guideline: An update on the diagnosis and treatment of insomnia 2023 - European Sleep Research Society, 2023 · DOI 10.1111/jsr.14035
- Insomnia - National Heart, Lung, and Blood Institute (NIH), 2026