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Last updated: October 2026.
Some people struggle to get to sleep. Many others drop off easily enough, then find themselves wide awake at 2 or 3am, staring at the ceiling. Doctors call this sleep maintenance difficulty, and it is one of the most common sleep complaints in adults, particularly from middle age onwards.
This guide explains why night waking happens, the most common causes, what to do in the moment, and where supplements such as CBD and CBN fit in. It is general information, not medical advice.
The short answer
- Brief awakenings during the night are normal. The problem is when you wake fully and cannot get back to sleep.
- Common causes include alcohol, late caffeine, stress, a warm bedroom, needing the toilet, reflux, pain, hormonal changes and sleep apnoea.
- What you do when you wake matters: keep the lights low, avoid the clock and phone, and get up if you are awake for more than about 20 minutes.
- Some people include CBD or CBN in an evening routine, but research is early and neither is a sleep treatment. Persistent night waking deserves a chat with your GP.
Night waking is partly normal
Sleep is not one long, even state. Through the night you move through cycles of roughly 90 minutes, from light sleep into deep sleep and then into dream (REM) sleep. Between cycles, it is normal to surface briefly, often without remembering it. Deep sleep is concentrated in the first half of the night; the second half has more light and REM sleep, which is why awakenings are more common in the early hours.
As we get older, sleep naturally becomes lighter and more broken. So a few short awakenings are not a sign that something is wrong. It becomes a problem when you wake fully, cannot get back to sleep, and feel the effects the next day.
Common causes of waking in the night
| Cause | Why it wakes you | What helps |
|---|---|---|
| Alcohol | Sedates at first, then fragments sleep as it wears off | Alcohol-free evenings; stop earlier |
| Caffeine | Can stay in the body for many hours | Caffeine before midday only |
| Stress and worry | Keeps the brain on alert | Worry list, wind-down routine |
| Warm bedroom | Body temperature needs to fall for deep sleep | Around 16 to 19°C, lighter bedding |
| Needing the toilet | Interrupts sleep cycles | Fewer drinks in the last two hours |
| Reflux | Worse lying down after late meals | Earlier, lighter evening meal |
| Light and noise | Early summer dawns, traffic, partners | Blackout blinds, earplugs |
| Pain | Discomfort wakes you between cycles | Talk to your GP; supportive pillows |
| Hormonal changes | Night sweats around menopause | Talk to your GP about options |
| Sleep apnoea | Breathing pauses briefly wake you | See your GP: needs assessment |
The 3am wake-up
Waking at the same time each night, often around 3 or 4am, is very common. Several factors can line up then: you have used up much of your deep sleep, sleep pressure is lower, body temperature starts to rise toward morning, and any alcohol from the evening has worn off. Add a busy mind, and it is easy to become fully alert. The more you worry about waking, the more alert you become, which is why the response to waking matters so much.
What to do when you wake
- Do not check the time. Turn the clock away. Calculating how much sleep you have left raises stress.
- Leave the phone alone. Bright light and stimulating content wake the brain up further.
- Try slow breathing. Breathe in for four, out for six, for a few minutes. See our breathing techniques guide.
- Use a calm thought task. Picture a familiar walk in detail, or name a fruit for every letter of the alphabet.
- Get up if it is not working. After about 20 minutes, go to another room, keep the light low, and do something calm until you feel sleepy.
- Keep a notepad by the bed. If a worry pops up, write it down and park it until morning.
Daytime habits that reduce night waking
- Get up at the same time every day, even after a poor night.
- Get outdoor light in the morning to anchor your body clock.
- Be active during the day, ideally outdoors.
- Avoid long or late naps.
- Keep caffeine to the morning and alcohol to a minimum, especially in the evening.
- Finish your evening meal two to three hours before bed; see gut health and sleep.
Night waking at different stages of life
- New parents. Broken sleep is unavoidable for a while. Nap when you can, share night feeds where possible, and protect the basics.
- Shift workers. Sleeping against the body clock makes waking more likely. Blackout blinds, earplugs and consistent sleep times within each shift pattern help.
- Perimenopause and menopause. Night sweats and hormonal changes commonly disrupt sleep. Light bedding, a cool room and a conversation with your GP about options can make a real difference.
- Older adults. Lighter sleep is normal with age. Daytime light, activity and avoiding long late-afternoon naps help most.
A simple two-week plan
If night waking has become a habit, try this for two weeks and keep a short diary:
- Fix your wake time seven days a week.
- No alcohol on at least five nights a week.
- Last caffeine before midday.
- Bedroom cool, dark and quiet; clock turned away.
- A 30-minute wind-down every evening.
- If you wake and cannot settle within about 20 minutes, get up and return when sleepy.
Most people notice their nights become more predictable within a couple of weeks. If not, take your diary to your GP: it is very useful information.
Where do CBD and CBN fit?
Many customers tell us they use CBD as part of a calm evening routine, and some have started to try CBN, a related hemp compound found in evening products. It is important to be clear about the evidence. Research on CBD and sleep is limited and mixed. Research on CBN is newer still: a handful of small trials since 2023, some reporting small differences in night-time awakenings and others finding little difference from placebo. Neither CBD nor CBN is a treatment for insomnia, and we make no claims that they will keep you asleep.
If you choose to try them, take them consistently 30 to 60 minutes before bed, start with the lowest serving, and change one thing at a time. Options include our CBD Oil 10% and our CBN Snooze Oil, an evening blend of CBN with CBD and CBC. We compare the two compounds in CBN vs CBD for sleep. Speak to your GP or pharmacist first if you take any medication, and do not drive if you feel drowsy.
When to see your GP
See your GP if night waking happens three or more nights a week for more than a month, affects how you feel or function during the day, or comes with loud snoring, gasping, choking or pauses in breathing, which can be signs of sleep apnoea. Also mention night sweats, frequent toilet trips, pain or low mood. CBT for insomnia is the recommended first treatment for long-term insomnia, including frequent night waking, and is available through some GPs, psychologists and online programmes in Ireland.
Frequently asked questions
Why do I wake up at 3am every night?
Deep sleep is used up early in the night, body temperature starts to rise toward morning, and alcohol or stress can make you more alert. Keeping a consistent routine and not checking the clock helps many people.
Is it normal to wake up during the night?
Brief awakenings between sleep cycles are normal and become more common with age. It is a problem when you wake fully and struggle to get back to sleep.
Does alcohol cause night waking?
Yes. Alcohol can help you fall asleep but fragments sleep in the second half of the night as it wears off.
Should I get up if I cannot sleep?
If you are awake for more than about 20 minutes, get up, go to another room and do something calm in low light until you feel sleepy.
Can CBD help me stay asleep?
Research is limited and mixed, and CBD is not a sleep treatment. Some people include it in an evening routine.
What is CBN?
CBN (cannabinol) is a non-intoxicating hemp compound found in some evening products. Research on CBN and sleep is at an early stage.
Could snoring be waking me up?
Loud snoring with gasping or pauses in breathing can be a sign of sleep apnoea, which needs assessment by your GP.
Does a warm bedroom cause night waking?
It can. Your body temperature needs to fall for deep sleep, so a cooler room of around 16 to 19°C suits most people.
Should I eat if I wake up hungry at night?
A small, light snack is fine if you are genuinely hungry, but regular night hunger may mean your evening meal is too early or too small.
Disclaimer: CBD is sold as a food supplement. It is not intended to diagnose, treat, cure or prevent any disease and is not a substitute for medical advice. Always consult a healthcare professional before starting a new supplement, especially if you take medication, are pregnant or breastfeeding.
