Waking briefly during the night is normal. Sleep runs in cycles, and you surface between them several times a night, usually without remembering it. It becomes a problem when the wakings are long, frequent or leave you tired.
The most common reasons are needing the bathroom, alcohol, stress, a hot, noisy or bright bedroom, acid reflux, pain, hot flashes and some medicines. Sleep disorders such as sleep apnea or restless legs can also be the cause. The best clue is what you notice the moment you wake. If you wake most nights for weeks, see our insomnia overview.
Waking up most nights? The insomnia severity calculator rates how much your sleep problem is affecting your nights and days and whether it is time to see a doctor.
Is It Normal To Wake Up During The Night?
Yes. Brief awakenings during the night are normal (Sleep Foundation). You pass through non-REM and REM sleep several times a night, usually three to five cycles (NIA). REM periods get longer later in the night (NINDS).
Between cycles and during lighter stages, sleep is shallow. A noise, a full bladder or a change in temperature can wake you. Our guide to sleep cycle science explains how the stages fit together.
Age changes the pattern too. Older adults tend to go to bed and wake earlier. Their sleep tends to be shorter and lighter, and they may wake more often during the night (NIA).
What matters is not whether you wake, but how long you stay awake and how you feel the next day. Insomnia includes trouble staying asleep and waking too early, along with daytime fatigue, poor concentration and irritability. An occasional poor night does not mean you have insomnia (AASM Sleep Education).
Why Do I Keep Waking Up At Night? A Cause Sorter
Notice what you feel or need at the moment you wake. That is often the best clue. The table groups the common causes into habits, body, bedroom and sleep disorders.
| What you notice when you wake | Likely cause | Type | First step |
|---|---|---|---|
| You need to urinate | Evening fluids, caffeine or alcohol; some medicines and conditions | Habit or body | Cut drinks before bed; see a doctor if it persists |
| Restless, sweaty or wide awake in the second half of the night after drinking | Alcohol | Habit | Stop alcohol 3 to 4 hours before bed |
| Your mind starts racing straight away | Stress or worry | Habit or mood | Wind-down routine; get up after about 20 minutes |
| Too hot, too cold, noise or light | Bedroom environment | Environment | Cool, dark, quiet room |
| Heartburn, sour taste or coughing | Acid reflux (GERD) | Body | No late meals; raise the head of the bed |
| Aching joints, back or other pain | Pain or another medical condition | Body | Treat the pain; review sleep position |
| Hot flash or soaked in sweat | Night sweats around menopause | Body | Cool bedroom; talk to a doctor about treatment |
| Started after a new medicine | Medicine side effect | Body | Ask your doctor or pharmacist; do not stop on your own |
| Gasping or choking, or a partner hears loud snoring | Sleep apnea | Sleep disorder | Sleep test |
| Urge to move your legs, or kicking | Restless legs or limb movements | Sleep disorder | See a doctor |
| Wide awake hours before the alarm, most days | Early body clock, insomnia or low mood | Timing or sleep disorder | See our 3 AM guide |
Sources: the sections below. The table is a starting point for spotting a pattern, not a diagnosis.
Habits That Wake You Up
Alcohol
Alcohol can make you feel sleepy at first. But it leads to lighter, more broken sleep and more wakings, especially in the second half of the night when blood alcohol levels begin to drop. It also reduces REM sleep. It can worsen snoring and sleep apnea by relaxing the throat muscles.
Sleep Foundation advises avoiding alcohol within three to four hours of bedtime (Sleep Foundation). The AASM notes that drinking close to bedtime can cause you to wake during the night (AASM).
Caffeine, Nicotine And Late Drinks
Caffeine and other stimulants can stop you from falling or staying asleep (AASM). Caffeine and nicotine are also linked with waking during the night (Sleep Foundation). The AASM advises avoiding caffeine in the afternoon and evening, and drinking less before bed (AASM).
Stress And Worry
Stress from work, relationships, money or a loss raises your risk of insomnia. Worrying about whether you will get enough sleep and watching the clock can make it worse (NHLBI).
Light sleep in the small hours gives a busy mind an easy opening. Breaking the habit of checking the time is one of the simplest changes you can make.
An Irregular Schedule And Long Naps
Changing your routine often, including your sleep schedule, raises the risk of sleep problems. So do long daytime naps (NHLBI). Our sleep hygiene guide covers the daily habits that keep your sleep steadier.
The chart below pulls the evening cutoffs from this guide into one picture.
Your Bedroom
Noise or light during the night can disturb your sleep-wake cycle. So can uncomfortably high or low temperatures (NHLBI). Traffic noise can wake you and trigger stress hormones. Even very dim light has been linked with more nighttime awakenings (Sleep Foundation).
A bed partner who snores can also disrupt your sleep (AASM). If that is you or your partner, see our guide to snoring causes and solutions.
Aim for a quiet, relaxing bedroom at a comfortable, cool temperature. Keep electronics out of the routine at least 30 minutes before bed (AASM).
Body Causes
Needing To Urinate (Nocturia)
Normally your body makes less urine at night. That lets most people sleep 6 to 8 hours without needing to urinate.
Several things can cause night-time urination. They include drinking a lot in the evening, and caffeine and alcohol with or after dinner. Bladder or urinary infections, an enlarged prostate, pregnancy, diabetes, heart failure and kidney disease can also cause it. So can some medicines, such as water pills. Waking often to urinate can also be linked to obstructive sleep apnea.
See a doctor if it goes on for several days, bothers you, burns or hurts, or if you see blood in your urine (MedlinePlus).
Acid Reflux
Gastroesophageal reflux disease (GERD) causes heartburn, a burning feeling behind the breastbone. It also causes regurgitation, where stomach contents come back up into your throat or mouth. Some people have a chronic cough instead (NIDDK).
Reflux gets worse when lying down because gravity no longer helps keep stomach acid down. Sleeping on your left side and raising the head while lying down may help (Sleep Foundation). Some medicines can make GERD worse, so mention reflux to your doctor if you take regular medicines (NIDDK).
Pain And Other Medical Conditions
Many illnesses can cause insomnia. Pain, discomfort or limited mobility can make it hard to fall or stay asleep. This is most common in older adults because chronic health problems become more common with age (AASM). Treating the underlying condition often improves sleep as well.
Hormone Changes And Menopause
Hot flashes are a common symptom of the menopausal transition. When they happen at night they are called night sweats (NIA). Hormone changes during pregnancy and menopause can cause sleep problems (NHLBI). The menopause sleep quality calculator helps you see which symptoms are doing the most damage to your nights.
Medicines
Insomnia can be a side effect of many prescription and over-the-counter medicines. Cold and allergy medicines with pseudoephedrine can affect sleep. So can some antidepressants and medicines for ADHD, high blood pressure or Parkinson’s disease (AASM).
Some prescription medicines, including beta blockers, opioids and stimulants, may interfere with staying asleep (Sleep Foundation). Tell your doctor about everything you take. Do not stop a prescribed medicine without advice.
Sleep Disorders That Cause Night Waking
Sleep Apnea
In obstructive sleep apnea your airway becomes blocked again and again during sleep. Your body wakes up many times, even though you may not notice each awakening. That is why people with apnea often feel tired despite a full night in bed (AASM).
Signs include breathing that stops and starts, frequent loud snoring and gasping for air. Others are daytime sleepiness, headache and waking often to urinate (NHLBI). The sleep apnea risk calculator is a quick first check. A doctor can arrange a sleep study.
Restless Legs And Limb Movements
Restless legs syndrome causes a powerful urge to move your legs. You may feel creeping, crawling, tingling or burning when you lie down or sit. It can make it hard to fall asleep and stay asleep.
Most people with it also have periodic limb movement disorder, in which the legs twitch or jerk during sleep (MedlinePlus). Read more about restless leg syndrome symptoms.
Insomnia
Chronic insomnia means trouble sleeping at least three times a week for at least three months. About 10 percent of people have it. Short-term insomnia affects 15 to 20 percent at any given time (AASM).
Insomnia is most often driven by another problem, such as stress, a medical condition, a mental health condition or a medicine. Finding that driver is part of treatment (AASM). For a wider checklist, see signs you have a sleep disorder.
Waking At The Same Early Hour
Do your wakings cluster around 3 or 4 AM, followed by lying awake until morning? The explanation is often different. Sleep is lighter late in the night, and an early body clock or low mood can play a part. Our guide to why you keep waking up at 3 AM covers that pattern in detail.
How To Get Back To Sleep After Waking
The chart shows the loop. The steps below explain each part.
- Do not check the clock or your phone. Clock-watching can make it harder to fall asleep, and screen light is best avoided (Sleep Foundation).
- Breathe slowly. Slow, deep breathing may activate the parasympathetic nervous system, which is involved in relaxation and sleep. The 4-7-8 pattern (in for 4, hold for 7, out for 8) is one option (Sleep Foundation).
- Relax your body with progressive muscle relaxation or a calm mental picture. Do not try to force sleep.
- If you are still awake after about 20 minutes, get out of bed. Do a quiet activity in low light, without electronics. Go back to bed when you feel sleepy (AASM).
- Deal with the trigger if you can. Cool the room, use the bathroom with a dim light, or prop yourself up if reflux woke you.
- Get up at your usual time in the morning, however the night went, and avoid long naps the next day.
How To Stop Waking Up At Night
- Keep a regular schedule. Go to sleep and get up at the same time each day, even at weekends and when traveling (NIA).
- Follow the evening cutoffs in the chart above for drinks, meals and exercise (NIA, AASM).
- Make the bedroom cool, dark and quiet. Use the bed only for sleep and sex (AASM).
- Keep a sleep diary for a couple of weeks. Note when you go to bed, when you wake in the night and when you get up. Add your caffeine, alcohol and exercise. It helps you and your doctor spot patterns (NIA).
- Treat the cause, such as reflux, pain, night sweats or sleep apnea, with your doctor’s help.
When To See A Doctor About Waking At Night
- You wake and struggle to get back to sleep at least three nights a week, or it has gone on for weeks and affects your days.
- You or a partner notice loud snoring, pauses in breathing, choking or gasping.
- You wake to urinate often, it burns or hurts, or you see blood in your urine (MedlinePlus).
- You have frequent heartburn, chest pain, trouble swallowing or unexplained weight loss (NIDDK).
- Night sweats, pain or leg sensations regularly break up your sleep.
- Waking early comes with low mood or loss of interest in things you used to enjoy.
If you keep waking after improving your sleep habits, talk to your doctor. They can look for an underlying cause and refer you to a sleep specialist if needed (Sleep Foundation). Chest pain can have serious causes. Get urgent help if it is severe or sudden.
Waking Up At Night FAQs
Why Do I Wake Up Every 2 Or 3 Hours?
You cycle through sleep stages several times a night and briefly surface between cycles. Waking fully each time usually means something is disturbing that light sleep. Common causes are noise, heat, a full bladder, alcohol or a sleep disorder.
Is Waking Up At Night A Sign Of A Health Problem?
Usually not on its own. It is worth checking if it happens most nights, leaves you tired, or comes with snoring, gasping, pain, frequent urination or night sweats.
Why Do I Wake Up After Drinking Alcohol?
Alcohol makes sleep lighter and more broken, especially in the second half of the night as your body clears it.
Can Sleep Apnea Wake Me Up Without Me Knowing?
Yes. Sleep apnea can cause many brief awakenings that you do not remember. The main clue may be feeling tired after a full night in bed.
Should I Get Up If I Cannot Get Back To Sleep?
If you are still awake after about 20 minutes, yes. Do something quiet in dim light without screens. Return to bed when sleepy.
Does Waking More Often Come With Age?
Yes. Sleep tends to become shorter and lighter with age. Older adults are also more likely to have conditions and medicines that disturb sleep.