Why Can't I Sleep? Understanding Insomnia and How to Improve Your Sleep

Have you ever found yourself tossing and turning in bed, unable to fall asleep no matter how tired you are or how much sleep you had before? Or maybe you wake up in the middle of the night and can't seem to get back to sleep? You're not alone. According to the National Sleep Foundation, 30 to 40% of adults experience insomnia at some point in their lives. If you're asking why can't I sleep, why can't I sleep at night or why can't I fall asleep even when tired, this article explores the common causes of insomnia and provides tips to help you fix insomnia naturally.

Table of Contents

Trouble sleeping: what is insomnia?

Insomnia is a sleep disorder that is characterized by difficulty falling or staying asleep, trouble sleeping or falling asleep again, or waking up too early and being unable to fall back asleep. Insomnia can be acute, lasting a few days or weeks, or chronic, lasting for months or even years.

Acute insomnia is often triggered by stress, such as a new job or a major life change, or by environmental factors that disrupt sleep itself, such as noise or an uncomfortable sleeping environment. Chronic insomnia causes, on the other hand, are often the result of underlying health conditions, such as anxiety, depression, or chronic pain.

Can't fall asleep? 7 common causes of insomnia

There are many factors that can contribute to insomnia symptoms. Here are the 7 most common ones:

Tips to improve sleep and get a good night's rest

If you're struggling with insomnia, there are several things you can do to improve your sleep and get the sleep you deserve:

1. Stick to a Sleep Schedule: Try to go to bed and wake up at the same time every day, even on weekends. This will help regulate your body's internal clock and improve the quality of your sleep. Limit naps. Write a sleep diary to help find your internal clock.
2. Create a Better Sleep Environment: Make sure your bedroom is quiet, the room is cool, and dark (use a black out sleep mask) as the body temperature has to drop. Use comfortable pillows and bedding, and remove any electronic devices that emit light or noise. Try a short warm bath to wind down before bedtime.
3. Limit Your Exposure to Screens: The blue light emitted by electronic devices can interfere with your sleep by suppressing the production of melatonin, a hormone that regulates sleep. Try to avoid using electronic devices with blue light for at least an hour before bedtime.
4. Avoid Stimulants: too much caffeine, nicotine, and alcohol in the hours before bedtime can interfere with your sleep.
5. When you eat matters: Avoid large meals and especially spicy foods and beverages before bedtime.
6. Exercise Regularly: Regular exercise can help improve the quality of your sleep by reducing stress and anxiety and promoting relaxation.
7. Practice Relaxation Techniques: Mindfulness meditation, deep breathing, and progressive muscle relaxation can help enter relaxing brain wave frequencies and thus promote relaxation and improve your sleep.
8. Lying Awake? Get out of bed, listen to soft music, read and distract yourself.
9. Get Help if You Need it: If your insomnia is chronic or is interfering with your daily life, talk to a sleep specialist, like a healthcare provider or a mental health professional.

Sleep disorders that prevent a good night's rest

Sleep disorders are a group of conditions that affect the quality, timing, and duration of sleep. Some of the most common sleep disorders include sleep difficulties.

Sleep disorders that prevent a good night's rest

Sleep disorders are a group of conditions that affect the quality, timing, and duration of sleep. There are many different types of sleep disorders, and they can affect people of all ages and backgrounds. Some of the most common sleep disorders include sleep difficulties:

1. Insomnia: This is a sleep disorder characterized by difficulty falling asleep or staying asleep. Insomnia can be caused by a variety of factors, including stress, anxiety, depression, and certain medications.

2. Sleep apnea: This is a sleep disorder characterized by brief interruptions in breathing during sleep. It occurs when the airway becomes partially or completely blocked, leading to decreased oxygen levels in the blood and frequent awakenings throughout the night.

3. Restless legs syndrome: This is a sleep disorder characterized by uncomfortable sensations in the legs that are relieved by movement. People with restless legs syndrome often have difficulty falling asleep or staying asleep.

4. Narcolepsy: This is a sleep disorder characterized by excessive daytime sleepiness and sudden sleep attacks. Narcolepsy is caused by a dysfunction in the brain's ability to regulate sleep-wake cycles.

5. Parasomnias: This is a group of sleep disorders characterized by abnormal behaviors that occur during sleep. Examples of parasomnias include sleepwalking, night terrors, and REM sleep behavior disorder.

6. Disorders of the circadian rhythms: This is a group of sleep disorders characterized by disruptions in the body's natural sleep-wake cycle. Examples of circadian rhythms disorders include jet lag and shift work sleep disorder.

Sleep disorders can have a significant impact on a person's overall health, immune system and well-being. If you are experiencing symptoms of a sleep disorder, it is important to talk to your doctor or talk to your healthcare provider to determine the underlying cause of sleepness nights and develop an appropriate treatment plan.

Sleep apnea symptoms – these common culprits might be keeping you up

Sleep apnea symptoms include loud snoring, gasping or choking during sleep, excessive daytime sleepiness, difficulty concentrating, and morning headaches. It occurs when the airway becomes partially or completely blocked. One common question is why do I wake up at 3am — sleep apnea is often the hidden reason.

Understanding insomnia – what's the science behind insomnia?

The following studies have contributed significantly to our understanding of the causes, consequences, and treatments of insomnia. They have helped identify the psychological, behavioral, and physiological factors that contribute to sleep difficulties.

Psychological and behavioral connections of insomnia

A comprehensive review of the literature on the psychological and behavioral treatments of insomnia found that cognitive-behavioral therapy (CBT) is the most effective treatment for chronic insomnia.

Depressive and anxiety disorders and insomnia

Chronic insomnia is often comorbid with depressive and anxiety disorders, and insomnia often precedes the onset of these disorders.

Subjective measures of sleep quality

Objective and subjective measures of sleep were often inconsistent, and subjective measures tended to overestimate the severity of sleep problems.

The Pittsburgh Sleep Quality Index

The PSQI is a self-report questionnaire that assesses subjective sleep quality over the previous month with good reliability and validity.

Beliefs and attitudes about sleep

Individuals with insomnia tended to have more negative beliefs and attitudes about sleep than those without insomnia.

Daytime fatigue, irritability, difficulty concentrating, and mood disturbances

The primary symptoms of insomnia are difficulty falling asleep or staying asleep. Other symptoms may include daytime fatigue, irritability, difficulty concentrating, and mood disturbances. 

By following the tips and relaxation techniques outlined above, you can create a sleep-friendly environment, establish healthy sleep habits, and reduce stress and anxiety, all of which can help improve the quality of your sleep.

Remember, getting a good night's sleep is essential for overall health and well-being. If you continue to struggle with insomnia despite making lifestyle changes, seek help from a healthcare provider. With the right treatment and support, you can overcome insomnia and get the restful, restorative sleep you need to feel your best.

For quick nightly fixes when you can't sleep even when tired, check our How to Sleep Better guide. For long-term mastery and deeper restorative sleep, read How to Sleep Well.

Sources:

1. Morin, C. M., Bootzin, R. R., Buysse, D. J., Edinger, J. D., Espie, C. A., & Lichstein, K. L. (2006). Psychological and behavioral treatment of insomnia: update of the recent evidence (1998-2004). Sleep, 29(11), 1398-1414.

2. Ohayon, M. M., & Roth, T. (2003). Place of chronic insomnia in the course of depressive and anxiety disorders. Journal of psychiatric research, 37(1), 9-15.

3. Lichstein, K. L., Riedel, B. W., & Lester, K. W. (1999). The sleep of insomniacs: a comparison of objective and subjective measures of sleep. Sleep, 22(7), 970-979.

4. Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989). The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry research, 28(2), 193-213.

5. Morin, C. M., Stone, J., Trinkle, D., Mercer, J., & Remsberg, S. (1993). Dysfunctional beliefs and attitudes about sleep among older adults with and without insomnia complaints. Psychology and aging, 8(3), 463-467.

6. Harvard Medical School: Sleep & Health Program