Key takeaways

  • Various things can cause you to wake up tired, even after getting enough sleep. It could be due to sleep inertia, sleep disorders, mental health challenges, and more.
  • Changes to your sleeping habits, including lowering the room temperature, limiting electronics before bed, and sticking with a sleep routine, may help you feel more rested after waking up.
  • People who continue to experience fatigue after waking, even after changing their sleep habits, may benefit from speaking with a healthcare professional.

It’s not unusual to wake up feeling a bit groggy. For many people, it’s nothing a cup of coffee or shower can’t fix.

But if you regularly wake up tired, especially if you continue to feel fatigued throughout the day, there may be something else going on.

Here’s a look at some common causes of waking up tired.

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Chances are, your morning grogginess is just sleep inertia, which is a natural part of the waking process. Your brain typically doesn’t instantly wake up after sleeping. It transitions gradually to a wakeful state.

During this transition period, you may feel groggy or disoriented. If you aren’t careful, you can easily fall back asleep.

Sleep inertia slows down your motor and cognitive skills, which is why it sometimes feels impossible to do anything right after you wake up.

Sleep inertia can last anywhere from a few minutes to over an hour. One 2026 study found that the mean average duration of sleep inertia was just under 16 minutes.

If, within the first few hours of falling asleep, you suddenly wake up from a deep sleep and are in a confused state, you may have sleep drunkenness.

Also called confusion arousals, sleep drunkenness is a sleep disorder that bypasses the inertia phase. You may not even remember it occurred when you wake up to start the day.

You may be more likely to experience symptoms of sleep inertia or sleep drunkenness if you:

  • don’t get enough sleep
  • wake up abruptly from a deep sleep
  • set your alarm for earlier than usual
  • have certain sleep disorders

How to relieve sleep inertia

Sleep inertia is a natural part of waking up, but you may be able to limit its effects by:

  • regularly getting a full night’s sleep
  • limiting naps to less than 30 minutes
  • trying strategies for more energy in the morning, such as exercising after waking up

If your symptoms persist, you can visit a healthcare professional to rule out an underlying sleep disorder.

Blue light is any artificial lighting that emits blue wavelengths. Blue light isn’t necessarily a bad thing. During daylight hours, it can boost alertness and mood. But this isn’t the vibe you need when you’re heading off to bed.

Energy-efficient lighting and electronic screens increase your exposure to blue light, especially after sundown.

Blue light, more than other types of light, suppresses the secretion of melatonin, a hormone that helps regulate your body’s circadian rhythm, which is your sleep-wake cycle. This may make it harder to get good-quality sleep, which can leave you feeling tired the next day.

How to reduce blue light exposure

To reduce the impact of blue light on your sleep:

  • Use blue-blocking glasses at night or an app that filters blue light if you have to use electronics at night.
  • Avoid screen time for a period before you go to bed.
  • Use dim red lights at night, which don’t have as powerful a melatonin-suppressing effect on your circadian rhythm.
  • Expose yourself to a lot of bright light during the day.

An unsuitable sleep environment can have a big impact on your sleep quality. Below are some areas to consider.

Mattress problems

If you wake up feeling stiff or achy, your mattress could be to blame.

A 2021 review of 39 articles suggests that a medium-firm mattress may improve sleep quality, spinal alignment, and comfort compared to other types of mattresses.

Some researchers suggest that firm mattresses may be suitable for some individuals, but not everyone.

Mattresses can also be home to allergens, such as dust mites, which can disturb your sleep with sneezing and coughing, especially in people with allergies and asthma.

Room temperature

Being too hot or too cold can cause restlessness and make it hard for you to fall or stay asleep. Personal preference should play a role in your bedroom’s temperature, but a cooler room may contribute to a comfortable sleep.

A 2023 study of ambient bedroom temperature among older adults suggests that sleep is most restful and efficient when the bedroom is between 68 and 77°F (20 and 25°C).

Light and noise

Even if you’re the type of person who can fall asleep during the day with the TV on, noise and light can still have a big impact on your sleep quality.

Keeping your bedroom dark and quiet can increase your deep sleep and decrease the number of times you wake up before your alarm.

Tips to improve your sleep environment

Below are some tips to improve your sleeping environment:

  • Consider replacing your mattress if it’s causing aches and pains.
  • Use a hypoallergenic mattress cover if you have allergies.
  • Keep your bedroom at a comfortable temperature.
  • Choose appropriate sleepwear and bedding for your local climate.
  • Sleep with earplugs or a sound machine if your environment is noisy.
  • Keep your windows and bedroom door closed to reduce external noise.
  • Use blackout blinds to reduce light pollution.

What you consume before bed can keep you up at night and make you feel tired in the morning.

Too much caffeine

Caffeine is a natural stimulant that promotes alertness. Having too much caffeine during the day or having it too close to bedtime can:

  • make it harder to fall asleep
  • make it harder to stay asleep
  • increase the number of times you go to the bathroom overnight

Coffee, certain teas, soft drinks, and some foods contain caffeine. Caffeine is also in certain medications, including some prescription and over-the-counter pain-relieving medications.

Drinking alcohol

Alcohol has a sedative effect and can make you sleepy, but it doesn’t lead to good sleep.

According to a 2025 review, alcohol disrupts rapid eye movement (REM) sleep. High doses can also delay the onset of sleep and deep sleep.

Frequent urination

Drinking too much of anything too close to bedtime can make you frequently wake to urinate. This can also happen in certain situations if you’re retaining a lot of fluid.

Excessive urination at night, also called nocturia, may also indicate an underlying medical condition. If you continue to wake up three or more times per night to urinate after limiting how much you drink before bed, speak with your doctor.

Tips to improve sleep with your diet

Try the following tips if you think your diet is affecting your sleep:

  • Limit caffeine and other stimulants in the afternoon, and particularly the hours before going to sleep.
  • Speak with your doctor about alternatives if you’re taking medications that contain caffeine.
  • Avoid drinking alcohol close to bedtime, and limit alcohol consumption.
  • Limit fluids for at least two hours before bedtime.

If nothing seems to be helping your morning grogginess, you may have an undiagnosed sleep disorder.

Sleep movement disorders

Sleep movement disorders are conditions that cause movement before or during sleep, making it hard to fall or stay asleep.

Below are some sleep movement disorders:

  • Restless legs syndrome: Restless legs syndrome causes uncomfortable sensations in your legs and a strong urge to move them that intensifies when trying to sleep. It is the most common sleep movement disorder.
  • Periodic limb movement disorder: This causes your limbs to flex, twitch, or jerk during sleep. Movements may occur every 5 to 90 seconds, and adults must have more than 15 movements per hour to meet the diagnostic criteria.
  • Bruxism: Bruxism involves clenching or grinding your teeth during sleep

Sleep apnea

Sleep apnea, usually obstructive sleep apnea, is a serious sleep disorder that causes your breathing to stop periodically in your sleep. You may not even realize you have the condition.

Other signs and symptoms of sleep apnea include:

Insomnia

Insomnia involves having a hard time falling asleep or waking up too early and not being able to go back to sleep. Short-term insomnia is common and can be due to stress, a traumatic event, or sleeping in unfamiliar surroundings, such as a hotel room.

Insomnia that lasts a month or more is considered chronic insomnia. This can be a condition itself or a symptom of an underlying issue.

Along with waking up tired, insomnia can also cause:

How to manage sleep disorders

The most suitable treatment depends on the sleep disorder a person has, so it’s important to speak with a doctor if someone has signs of one of these conditions.

A doctor may recommend a sleep study or sleep diaries as part of the diagnosis before recommending treatment.

According to a 2023 study of sleep quality in healthcare students with stress or mental health issues, sleep quality was worse in students with perceived stress, and bad sleep quality was twice as likely in those with anxiety.

Sleep issues are also very common in people with depression.

Sleep issues and stress or mental health issues can also be cyclical problems. If stress or mental health issues cause you to not get enough sleep, you might start feeling more stressed about your fatigue, leading to worse sleep, and so on.

Tips for managing stress and mental health

It’s important to speak with a doctor if you have signs of a mental health condition. They will be able to diagnose you and provide suitable treatment, which may include medications or psychotherapy.

You can also work to manage stress at home with tips like:

Fatigue and sleeping difficulties can be side effects of certain medications.

According to a 2025 review, the following common medications may lead to sleep disruptions:

  • beta blockers
  • certain antidepressants
  • phosphodiesterase type 5 inhibitors

Sleep issues may be a rare side effect of some medications.

How to manage medication side effects

If sleep issues begin after you start taking a new medication, it’s a good idea to speak with your doctor.

They may be able to recommend an alternative medication that doesn’t cause the same side effects or help you manage the sleep disruption you’re experiencing.

Various things can cause you to continue feeling tired even if you get enough sleep. This article only covers a few possible causes of waking up tired.

You may be able to manage some of these causes by yourself, but others may require help from a professional.

Waking up tired may improve with a few changes to your sleeping habits and cutting back on caffeine or alcohol. If nothing seems to be helping, it’s best to follow up with your doctor to check for underlying conditions.