Short answer: when you can't sleep, the best strategy is not to force it - there are concrete, science-based techniques that can help you fall asleep tonight.

Can't Fall Asleep? Understand What's Going On In Your Brain
Sleep is not a button that you switch on when you go to bed. It's the result of a balance between two brain systems: the sleep system (which builds up pressure throughout the day) and the warning system (which keeps the brain vigilant).
In insomnia, This balance is disturbed - the alert system dominates, even when the body is exhausted. E the more you try to force yourself to sleep, the more your alert system activates.
Realising this dynamic is the first step to getting out of the trap.
What to do in the moment of alarm anxiety
There is a counterintuitive rule, but with strong scientific support: 20 minutes have passed and sleep hasn't come, get up.
Staying awake in bed reinforces the brain's natural association between space and activity. By getting the brain used to staying awake in bed, it begins to normalise the association between bed and wakefulness - the opposite of what is intended.
Change rooms, keep the light dimmed, and do something peacefulread a physical book, listen to soft music, do some light stretching. Only go back to bed when you feel sleep coming on.
You can also try techniques such as breathing technique 4-7-8Inhale for 4 seconds, hold your breath for 7 seconds and exhale slowly for 8 seconds. parasympathetic nervous system - the body's “rest” mode - and reduces the physiological activation that prevents sleep. O progressive muscle relaxation is another effective option: tense and release each muscle group, from head to toe. Both techniques have robust scientific evidence.
What should not do is checking your mobile phone or turning on the television. The blue light emitted by screens inhibits the production of melatonin - the hormone that signals the brain that it's time to sleep - and prolongs alertness for longer than you might think.
Sleep Hygiene: The Habits That Make a Difference
The expression “sleep hygiene” refers to the set of behaviours e environmental conditions that facilitate quality sleep. It's the first line of approach recommended in the insomnia treatment by the main international clinical guidelines - before any medication.
The main principles are:
- Consistent timetables: always waking up at the same time, including weekends. It's one of the most powerful factors in regulating the circadian rhythm - the internal biological clock.
- Reserve the bed for sleeping only: working, eating or watching series in bed confuses the brain about the meaning of that space.
- Control the light at night: reduce exposure to screens and bright light in the hour before bedtime. Darkness is the most powerful signal for starting melatonin production.
- Room temperature: a slightly cooler environment (between 16 and 19°C) favours sleep, as the body needs to lower its core temperature to enter the deeper stages.
- Avoid caffeine after lunch and alcohol at night - the latter may help you fall asleep faster, but it fragments the more restorative phases of sleep.
If you find it hard to give up your mobile phone before bed, try replacing it with a physical book for just 7 days. Most people notice a difference in the quality of their sleep within the first week.
Exercise, Food and Sleep
Regular physical exercise is one of the interventions with more evidence to improve sleep.
Pay attention to the timetable: intense exercise in the two to three hours before bedtime can have a stimulating effect - prefer the morning or early afternoon.
As for diet, a diet close to the Mediterranean pattern has been associated with better sleep quality, while heavy or sugar-rich meals close to bedtime make it harder to fall asleep.
When Insomnia Persists: Science-Based Treatments
If the difficulty in sleeping continues for more than three weeks, or occurs three or more times a week, It is important to seek specialised assessment. A chronic insomnia rarely resolves on its own, and can be a symptom of something deeper, such as anxiety, depression or underlying neurological disorders.
The reference treatment is Cognitive Behavioural Therapy for Insomnia (CBT-I), The results are long-lasting and superior to long-term medication.
In cases where insomnia is linked to dysregulation of brain activity - common in chronic anxiety, burnout or neurodevelopmental disorders - the Neurofeedback trains the brain to produce more favourable sleep patterns. A Transcranial Magnetic Stimulation (TMS) is another option in cases associated with depression or resistant anxiety.
At NeuroPsyque, every case of insomnia is evaluated in an integrated way, at Psychiatry consultation, Because sleeping well shouldn't be a luxury, but the basics, essential for the health of all the body's systems and for your well-being.
🧠 Key Points to Retain
- Around 28% of Portuguese have frequent insomnia symptoms - with a real impact on physical and mental health.
- Forcing yourself to sleep makes it worse: if you haven't fallen asleep for 20 minutes, get up and do something quiet.
- Breathing techniques (4-7-8) and progressive muscle relaxation activate the nervous system's “rest” mode.
- Sleep hygiene - consistent schedules, a dark and cool room, no screens - is the basis of any effective intervention.
- Regular exercise and a balanced diet have a direct impact on sleep quality.
- Chronic insomnia deserves specialised assessment; CBT-I, Neurofeedback and EMT are all options available at NeuroPsyque.
FAQs - Frequently Asked Questions
Is it normal not to be able to sleep from time to time?
Yes, occasional episodes associated with stress or changes in routine are common and usually resolve themselves. The problem sets in when the difficulty persists for weeks or becomes recurrent.
Does melatonin solve insomnia?
It can be useful in specific contexts such as jet lag or shift work. It is not, however, a treatment for chronic insomnia, and its use should be guided by a health professional.
Does napping during the day affect your night's sleep?
A short nap (up to 20 minutes) before 3pm can be beneficial. Long or late naps reduce the accumulated “sleep pressure” and make it difficult to fall asleep at night - insomnia sufferers should avoid them.
Does alcohol help you sleep?
It's a common myth. Alcohol makes it easier to fall asleep initially, but it fragments the deep stages of sleep - especially REM. The result is waking up more often and feeling less rested.
When should I seek medical help?
When difficulty sleeping occurs three or more times a week for more than a month and begins to affect mood, concentration or daily performance. Chronic insomnia is treatable - and the sooner you intervene, the better the results.