Neurology, psychiatry, Sedatives, sleeping pills
Best Sleep Phase Tips for Deep Rest Every Night
Apr
Getting a good night’s sleep is essential for maintaining optimal physical and mental health. However, achieving deep, restorative sleep can be challenging due to various factors such as stress, poor sleep habits, and underlying health conditions. Understanding the different sleep phases and implementing effective strategies to optimize each stage can significantly improve the quality of your sleep.
This comprehensive guide explores the best sleep phase tips for achieving deep rest every night. By incorporating these evidence-based techniques into your daily routine, you can enhance your sleep quality, boost your energy levels, and improve your overall well-being. Whether you struggle with falling asleep, staying asleep, or waking up feeling refreshed, this article will provide you with the knowledge and tools necessary to transform your sleep experience.
Understanding Sleep Phases and Their Importance
Sleep is a complex process that consists of four distinct stages, each with its own unique characteristics and functions. These stages are divided into two main categories: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. Understanding the role of each sleep phase is crucial for optimizing your sleep quality and ensuring that your body and mind receive the necessary restorative benefits.
The Four Stages of Sleep
The four stages of sleep include three NREM stages (N1, N2, and N3) and one REM stage. During NREM sleep, your body progressively relaxes, your heart rate and breathing slow down, and your brain waves become slower[1]. N1 is the lightest stage of sleep, acting as a transition between wakefulness and deeper sleep. N2 is characterized by the appearance of sleep spindles and K-complexes on an EEG, indicating a deeper state of sleep. N3, also known as slow-wave sleep or deep sleep, is the most restorative stage, essential for physical recovery, hormone regulation, and immune system support[2].
REM Sleep and Its Role in Memory Consolidation
REM sleep, which occurs approximately 90 minutes after falling asleep, is characterized by rapid eye movements, increased brain activity, and vivid dreaming. During this stage, your brain processes and consolidates information acquired during wakefulness, facilitating learning and memory formation[3]. REM sleep also plays a crucial role in emotional regulation and creativity.
The Sleep Cycle and Its Duration
A typical sleep cycle lasts around 90-120 minutes and repeats several times throughout the night. As the night progresses, the duration of NREM stages decreases, while the duration of REM stages increases. Adults generally require 7-9 hours of sleep per night to complete multiple sleep cycles and achieve optimal rest.
By understanding the importance of each sleep phase and the factors that influence them, you can take proactive steps to enhance your sleep quality and ensure that your body and mind receive the restorative benefits they need.
Creating an Optimal Sleep Environment
Crafting a sleep-conducive environment is essential for promoting deep, restorative rest. Your bedroom should be a sanctuary dedicated to relaxation and comfort, allowing your body and mind to unwind and prepare for sleep. Several key factors contribute to an optimal sleep environment, including temperature, lighting, noise levels, and bedding quality.
Ideal Room Temperature for Deep Sleep
Maintaining a cool, comfortable room temperature is crucial for achieving deep sleep. The optimal temperature range for sleep is between 60°F and 67°F (15.6°C to 19.4°C)[4]. When your body prepares for sleep, your core temperature naturally drops, and a cooler room facilitates this process. Invest in a programmable thermostat or use breathable bedding to regulate your sleep environment’s temperature.
Minimizing Noise and Light Disturbances
Exposure to light and noise can significantly disrupt your sleep quality. To minimize these disturbances, consider using blackout curtains or a sleep mask to block out external light sources. If you live in a noisy area, invest in a white noise machine or use earplugs to create a peaceful auditory environment[5]. Additionally, avoid using electronic devices that emit blue light, such as smartphones or tablets, at least an hour before bedtime, as blue light can interfere with your body’s natural sleep-wake cycle.
Choosing the Right Mattress and Pillow
Investing in a high-quality mattress and pillow that provide adequate support and comfort is essential for promoting deep sleep. A mattress should support your body’s natural alignment, reduce pressure points, and minimize motion transfer if you share your bed with a partner. Similarly, pillows should support your head and neck, keeping your spine in a neutral position[6]. Consider your sleep position and personal preferences when selecting bedding to ensure optimal comfort.
Incorporating Calming Scents and Sounds
Incorporating calming scents and sounds into your sleep environment can promote relaxation and improve sleep quality. Essential oils such as lavender, chamomile, and valerian have been shown to have sedative properties and can be used in a diffuser or applied topically before bedtime. Soothing sounds, such as nature recordings or calming music, can also help you unwind and drift off to sleep more easily.
By optimizing your sleep environment, you can create a sanctuary that promotes deep, restorative rest and improves your overall sleep quality.
Establishing a Consistent Sleep Schedule
Maintaining a consistent sleep schedule is one of the most effective ways to improve your sleep quality and ensure that you achieve deep, restorative rest each night. By going to bed and waking up at the same time every day, you can regulate your body’s internal clock, also known as the circadian rhythm, which governs your sleep-wake cycle[7].
The Importance of a Regular Sleep Routine
Establishing a regular sleep routine helps synchronize your body’s natural sleep-wake cycle with your daily schedule. When your sleep pattern is consistent, your body learns to anticipate sleep at a specific time, making it easier to fall asleep and wake up naturally. This consistency also promotes deeper, more restorative sleep stages, as your body becomes accustomed to a predictable sleep schedule[8].
Determining Your Ideal Sleep Schedule
To determine your ideal sleep schedule, consider your natural sleep preferences (whether you are a morning or evening person) and your daily commitments. Aim for 7-9 hours of sleep per night, and set your bedtime and wake-up time accordingly. Keep in mind that it may take some time for your body to adjust to a new sleep schedule, so be patient and consistent in your efforts.
Creating a Relaxing Bedtime Routine
Establishing a relaxing bedtime routine can help signal to your body that it’s time to wind down and prepare for sleep. This routine should include calming activities such as reading, gentle stretching, or practicing relaxation techniques like deep breathing or meditation[9]. Avoid stimulating activities, such as watching television or using electronic devices, as these can interfere with your ability to fall asleep.
| Pros | Cons |
|---|---|
| Regulates your body’s internal clock | May require adjusting social and work commitments |
| Promotes deeper, more restorative sleep | Can be challenging to maintain on weekends and holidays |
| Makes it easier to fall asleep and wake up naturally | May take time for your body to adjust to a new routine |
By prioritizing a consistent sleep schedule and creating a relaxing bedtime routine, you can significantly improve your sleep quality and ensure that your body receives the deep, restorative rest it needs to function at its best.
Promoting Relaxation Before Bedtime
Engaging in relaxation techniques before bedtime can significantly improve your ability to fall asleep quickly and achieve deep, restorative rest. By promoting a sense of calm and tranquility, these practices help to quiet your mind, reduce stress and anxiety, and prepare your body for sleep[10].
Deep Breathing and Meditation Techniques
Deep breathing and meditation are powerful tools for promoting relaxation and reducing stress. These techniques involve focusing on your breath and bringing your attention to the present moment, helping to quiet racing thoughts and calm your mind. To practice deep breathing, find a comfortable position and inhale slowly through your nose, allowing your belly to expand. Exhale slowly through your mouth, releasing any tension or stress. Repeat this process for several minutes, focusing on the sensation of your breath moving in and out of your body.
Progressive Muscle Relaxation
Progressive muscle relaxation is a technique that involves systematically tensing and relaxing different muscle groups throughout your body. This practice helps to release physical tension, promote relaxation, and prepare your body for sleep[11]. To perform progressive muscle relaxation, start by finding a comfortable position and taking a few deep breaths. Begin with your toes, tensing the muscles for 5-10 seconds, then releasing the tension and focusing on the sensation of relaxation. Work your way up through your body, tensing and relaxing each muscle group, until you reach the top of your head.
Gentle Stretching and Yoga Poses
Engaging in gentle stretching or practicing calming yoga poses before bed can help to release physical tension, promote relaxation, and improve sleep quality. Focus on slow, controlled movements and deep breathing, avoiding any intense or overly stimulating poses. Some relaxing yoga poses to try include Child’s Pose, Legs-Up-the-Wall Pose, and Corpse Pose[12].
Creating a Soothing Bedtime Environment
In addition to practicing relaxation techniques, it’s essential to create a soothing bedtime environment that promotes feelings of calm and tranquility. This can include dimming the lights, adjusting the room temperature to a comfortable level, and incorporating calming scents such as lavender or chamomile. Engaging in quiet, relaxing activities like reading or listening to soothing music can also help to promote a sense of peace and prepare your mind and body for sleep.
By incorporating relaxation techniques into your bedtime routine and creating a calming sleep environment, you can significantly improve your ability to fall asleep quickly and achieve the deep, restorative rest your body needs.
Optimizing Your Diet for Better Sleep
The foods you consume throughout the day can significantly impact your sleep quality. Certain nutrients and compounds found in food can promote relaxation and help regulate your sleep-wake cycle, while others may interfere with your ability to achieve deep, restorative rest[13].
Foods That Promote Sleep
Incorporating sleep-promoting foods into your diet can help you achieve better quality rest. Tryptophan-rich foods, such as turkey, chicken, eggs, and nuts, can help increase the production of serotonin, a neurotransmitter that regulates sleep. Magnesium-rich foods, like leafy greens, pumpkin seeds, and whole grains, can also promote relaxation and improve sleep quality. Additionally, foods containing melatonin, such as cherries, grapes, and nuts, can help regulate your sleep-wake cycle[14].
Foods and Substances to Avoid Before Bedtime
Just as some foods can promote sleep, others can interfere with your ability to achieve deep, restorative rest. Caffeine, found in coffee, tea, and chocolate, is a stimulant that can keep you awake and disrupt your sleep quality. Alcohol, while initially causing drowsiness, can lead to fragmented sleep and reduce the amount of time you spend in deep, restorative sleep stages. Heavy, high-fat meals consumed close to bedtime can also interfere with sleep, as they require more digestive effort and can cause discomfort[15].
Timing Your Meals for Optimal Sleep
In addition to choosing sleep-promoting foods, it’s essential to consider the timing of your meals. Aim to consume your last meal of the day at least 2-3 hours before bedtime to allow your body sufficient time to digest. If you find yourself hungry before bed, opt for a small, sleep-friendly snack, such as a handful of nuts or a small glass of tart cherry juice.
Staying Hydrated for Better Sleep
Maintaining proper hydration throughout the day is crucial for overall health and can also impact your sleep quality. Dehydration can lead to discomfort and restlessness, making it harder to fall asleep and stay asleep. Aim to drink plenty of water throughout the day, but reduce your fluid intake in the hours leading up to bedtime to minimize the need for nighttime bathroom trips.
By optimizing your diet and making strategic food choices, you can promote relaxation, regulate your sleep-wake cycle, and improve the overall quality of your sleep.
Incorporating Physical Activity for Improved Sleep
Regular physical activity can have a profound impact on your sleep quality, helping you fall asleep faster, achieve deeper, more restorative rest, and wake up feeling refreshed and energized. Exercise helps to regulate your body’s internal clock, reduce stress and anxiety, and promote feelings of relaxation[16].
The Benefits of Exercise for Sleep Quality
Engaging in regular physical activity can help to improve your sleep quality in several ways. Exercise increases the amount of time you spend in deep, restorative sleep stages, allowing your body to repair and regenerate more effectively. It also helps to regulate your body’s production of hormones, such as melatonin and cortisol, which play a crucial role in your sleep-wake cycle. Additionally, physical activity can help to reduce stress and anxiety, promoting feelings of relaxation and making it easier to fall asleep at night[17].
Choosing the Right Type and Intensity of Exercise
When incorporating physical activity into your routine for better sleep, it’s essential to choose the right type and intensity of exercise. Moderate-intensity aerobic exercises, such as brisk walking, cycling, or swimming, have been shown to be particularly effective in improving sleep quality. Strength training and yoga can also promote relaxation and help to reduce stress and anxiety. Aim to engage in at least 30 minutes of moderate-intensity exercise most days of the week for optimal sleep benefits.
Incorporating Physical Activity into Your Daily Routine
To maximize the sleep-promoting benefits of exercise, try to incorporate physical activity into your daily routine. This can include taking a brisk walk during your lunch break, cycling to work instead of driving, or joining a fitness class after work. Finding activities that you enjoy and can stick with long-term will help you maintain a consistent exercise routine and reap the ongoing benefits for your sleep quality[18].
Combining Exercise with Other Sleep-Promoting Strategies
While regular physical activity can significantly improve your sleep quality, it’s essential to combine exercise with other sleep-promoting strategies for optimal results. This can include establishing a consistent sleep schedule, creating a relaxing bedtime routine, optimizing your sleep environment, and making strategic dietary choices. By taking a comprehensive approach to sleep hygiene, you can ensure that your body receives the deep, restorative rest it needs to function at its best.
Managing Stress and Anxiety for Restful Sleep
Stress and anxiety are common culprits behind poor sleep quality, making it difficult to fall asleep, stay asleep, and achieve deep, restorative rest. By implementing effective stress management techniques and addressing the underlying causes of your anxiety, you can significantly improve your sleep quality and overall well-being[19].
Identifying Sources of Stress and Anxiety
The first step in managing stress and anxiety for better sleep is to identify the sources of your stress. Common causes of stress and anxiety include work-related pressures, financial concerns, relationship issues, and health problems. Once you have identified the primary sources of your stress, you can begin to develop targeted strategies to address them.
Developing Effective Coping Mechanisms
Developing effective coping mechanisms is essential for managing stress and anxiety and promoting restful sleep. This can include practicing relaxation techniques, such as deep breathing, meditation, or progressive muscle relaxation, which help to calm your mind and body. Engaging in regular physical activity, such as yoga or aerobic exercise, can also help to reduce stress and promote feelings of relaxation. Additionally, making time for hobbies and activities that you enjoy can provide a much-needed break from stress and help to promote a sense of balance and well-being[20].
Seeking Professional Support
If stress and anxiety are significantly impacting your sleep quality and overall well-being, it may be beneficial to seek professional support.Talking to a therapist or counselor can help you develop personalized strategies for managing stress and anxiety, and address any underlying mental health concerns. Cognitive-behavioral therapy (CBT) has been shown to be particularly effective in treating sleep disorders related to stress and anxiety, helping individuals to identify and change negative thought patterns and behaviors that contribute to poor sleep[21].
Prioritizing Self-Care and Well-Being
Prioritizing self-care and well-being is crucial for managing stress and anxiety and promoting restful sleep. This includes making time for activities that promote relaxation and stress relief, such as taking a warm bath, reading a book, or practicing gentle stretching. It also involves maintaining a healthy lifestyle, including eating a balanced diet, staying hydrated, and getting regular exercise. By prioritizing your physical and emotional well-being, you can build resilience against stress and anxiety and improve your overall sleep quality.
Troubleshooting Common Sleep Issues
Even with the best intentions and a commitment to good sleep hygiene, many people still experience common sleep issues that can interfere with their ability to achieve deep, restorative rest. By identifying and addressing these problems, you can take proactive steps to improve your sleep quality and overall well-being[22].
Difficulty Falling Asleep
If you find yourself struggling to fall asleep at night, there are several strategies you can try to promote relaxation and make it easier to drift off. Establishing a consistent sleep schedule and bedtime routine can help to signal to your body that it’s time to wind down and prepare for rest. Practicing relaxation techniques, such as deep breathing or progressive muscle relaxation, can also help to calm your mind and body. If racing thoughts are keeping you awake, try writing down your concerns or ideas in a journal before bed to help clear your mind.
Waking Up During the Night
Waking up during the night is a common sleep issue that can leave you feeling groggy and unrested in the morning. If you find yourself waking up frequently, try to identify any potential causes, such as noise, light, or discomfort. Consider using earplugs, a white noise machine, or blackout curtains to create a more sleep-conducive environment. If you wake up and can’t fall back asleep, avoid checking the time or engaging in stimulating activities like using your phone or watching TV. Instead, try a relaxing activity like reading or gentle stretching until you feel sleepy again[23].
Snoring and Sleep Apnea
Snoring and sleep apnea are sleep disorders that can significantly impact your sleep quality and overall health. Snoring occurs when the tissues in your throat relax and vibrate during sleep, while sleep apnea involves repeated pauses in breathing throughout the night. If you suspect that you may have sleep apnea, it’s essential to talk to your doctor or a sleep specialist, as untreated sleep apnea can lead to serious health complications. Treatment options may include lifestyle changes, such as losing weight or avoiding alcohol, or using a continuous positive airway pressure (CPAP) device to help keep your airway open during sleep.
Restless Legs Syndrome (RLS)
Restless legs syndrome (RLS) is a neurological disorder that causes an irresistible urge to move your legs, often accompanied by uncomfortable sensations like tingling, crawling, or aching. RLS can make it difficult to fall asleep and stay asleep, leading to daytime fatigue and decreased quality of life. If you suspect that you may have RLS, talk to your doctor about potential treatment options, which may include lifestyle changes, such as regular exercise and stress management, or medications to help control your symptoms[24].
By identifying and addressing common sleep issues, you can take proactive steps to improve your sleep quality and overall well-being. If you continue to struggle with sleep despite your best efforts, don’t hesitate to talk to your doctor or a sleep specialist for personalized guidance and support.
Frequently Asked Questions
It’s recommended to stop using electronic devices at least 1-2 hours before bedtime. The blue light emitted by these devices can interfere with your body’s production of the sleep hormone melatonin, making it harder to fall asleep. Instead, try reading a book, listening to soothing music, or practicing relaxation techniques to help you unwind before bed.
The ideal room temperature for sleeping is between 60-67°F (15-19°C). A slightly cool room can help promote deeper, more restful sleep by allowing your body temperature to naturally decrease, which is an important part of the sleep process. If your room is too warm, it can lead to discomfort and restlessness, while a room that’s too cold can make it difficult to relax and fall asleep.
Yes, engaging in intense physical activity too close to bedtime can have a stimulating effect on your body and mind, making it harder to fall asleep. It’s best to complete your workouts at least 2-3 hours before bedtime to allow your body sufficient time to unwind and prepare for sleep. However, gentle exercises like yoga or stretching can be beneficial for promoting relaxation and improving sleep quality when done closer to bedtime.
Yes, certain foods and drinks can help promote better sleep. Foods rich in tryptophan, such as turkey, chicken, eggs, and nuts, can help boost the production of serotonin and melatonin, which are important for regulating sleep. Drinking tart cherry juice or chamomile tea before bed may also help improve sleep quality due to their natural sleep-promoting properties. However, it’s important to avoid large meals, caffeine, and alcohol close to bedtime, as these can disrupt sleep.
Managing stress and anxiety is crucial for achieving restful sleep. Some effective strategies include practicing relaxation techniques like deep breathing, meditation, or progressive muscle relaxation, engaging in regular physical activity, and making time for hobbies and activities you enjoy. If stress and anxiety are significantly impacting your sleep, consider talking to a therapist or counselor who can help you develop personalized coping strategies and address any underlying mental health concerns.
If you find yourself waking up during the night and struggling to fall back asleep, try to avoid checking the time or engaging in stimulating activities like using your phone or watching TV. Instead, focus on relaxation techniques, such as deep breathing or visualization, to help calm your mind and body. If you’re still awake after 20-30 minutes, consider getting out of bed and doing a quiet, non-stimulating activity like reading or gentle stretching until you feel sleepy again.
Creating a sleep-friendly environment is essential for promoting restful sleep. Start by ensuring your bedroom is dark, quiet, and cool. Use comfortable bedding and pillows, and consider investing in a supportive mattress. Keep your bedroom clutter-free and reserve it primarily for sleep and intimacy. If outside noise is a problem, try using earplugs or a white noise machine to create a more peaceful atmosphere. Lastly, avoid using electronic devices in your bedroom, as the blue light they emit can interfere with your sleep quality.
Reference list
- Buysse, D. J. (2014). Sleep health: can we define it? Does it matter?. Sleep, 37(1), 9-17.
- Hirshkowitz, M., Whiton, K., Albert, S. M., Alessi, C., Bruni, O., DonCarlos, L., … & Neubauer, D. N. (2015). National Sleep Foundation’s updated sleep duration recommendations. Sleep health, 1(4), 233-243.
- Stepanski, E. J., & Wyatt, J. K. (2003). Use of sleep hygiene in the treatment of insomnia. Sleep medicine reviews, 7(3), 215-225.
- Irish, L. A., Kline, C. E., Gunn, H. E., Buysse, D. J., & Hall, M. H. (2015). The role of sleep hygiene in promoting public health: A review of empirical evidence. Sleep medicine reviews, 22, 23-36.
- Walker, M. P. (2009). The role of sleep in cognition and emotion. Annals of the New York Academy of Sciences, 1156(1), 168-197.
- Czeisler, C. A. (2015). Duration, timing and quality of sleep are each vital for health, performance and safety. Sleep Health: Journal of the National Sleep Foundation, 1(1), 5-8.
- Goel, N., Rao, H., Durmer, J. S., & Dinges, D. F. (2009). Neurocognitive consequences of sleep deprivation. Seminars in neurology, 29(4), 320-339.
- Grandner, M. A., Jackson, N., Gerstner, J. R., & Knutson, K. L. (2014). Sleep symptoms associated with intake of specific dietary nutrients. Journal of sleep research, 23(1), 22-34.
- Binks, H., Vincent, G. E., Gupta, C., Irwin, C., & Khalesi, S. (2020). Effects of diet on sleep: a narrative review. Nutrients, 12(4), 936.
- Halson, S. L. (2014). Sleep in elite athletes and nutritional interventions to enhance sleep. Sports Medicine, 44(1), 13-23.
- Chennaoui, M., Arnal, P. J., Sauvet, F., & Léger, D. (2015). Sleep and exercise: a reciprocal issue?. Sleep medicine reviews, 20, 59-72.
- Dolezal, B. A., Neufeld, E. V., Boland, D. M., Martin, J. L., & Cooper, C. B. (2017). Interrelationship between sleep and exercise: a systematic review. Advances in preventive medicine, 2017.
- Chang, A. M., Aeschbach, D., Duffy, J. F., & Czeisler, C. A. (2015). Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. Proceedings of the National Academy of Sciences, 112(4), 1232-1237.
- Exelmans, L., & Van den Bulck, J. (2016). Bedtime mobile phone use and sleep in adults. Social Science & Medicine, 148, 93-101.
- Hale, L., & Guan, S. (2015). Screen time and sleep among school-aged children and adolescents: a systematic literature review. Sleep medicine reviews, 21, 50-58.
- De Niet, G. J., Tiemens, B. G., Kloos, M. W., & Hutschemaekers, G. J. (2009). Review of systematic reviews about the efficacy of non-pharmacological interventions to improve sleep quality in insomnia. International Journal of Evidence-Based Healthcare, 7(4), 233-242.
- Ong, J. C., Manber, R., Segal, Z., Xia, Y., Shapiro, S., & Wyatt, J. K. (2014). A randomized controlled trial of mindfulness meditation for chronic insomnia. Sleep, 37(9), 1553-1563.
- Mendelson, W. B., Roth, T., Cassella, J., Roehrs, T., Walsh, J. K., Woods, J. H., … & Buysse, D. J. (2004). The treatment of chronic insomnia: drug indications, chronic use and abuse liability. Summary of a 2001 New Clinical Drug Evaluation Unit meeting symposium. Sleep medicine reviews, 8(1), 7-17.
- Winbush, N. Y., Gross, C. R., & Kreitzer, M. J. (2007). The effects of mindfulness-based stress reduction on sleep disturbance: a systematic review. EXPLORE: The Journal of Science and Healing, 3(6), 585-591.
- Van Reeth, O., Weibel, L., Spiegel, K., Leproult, R., Dugovic, C., & Maccari, S. (2000). Physiology of sleep (review)–Interactions between stress and sleep: from basic research to clinical situations. Sleep Medicine Reviews, 4(2), 201-219.
- Morin, C. M., Rodrigue, S., & Ivers, H. (2003). Role of stress, arousal, and coping skills in primary insomnia. Psychosomatic medicine, 65(2), 259-267.
- Smith, M. T., Huang, M. I., & Manber, R. (2005). Cognitive behavior therapy for chronic insomnia occurring within the context of medical and psychiatric disorders. Clinical psychology review, 25(5), 559-592.
- Chung, K. F., Yeung, W. F., Ho, F. Y. Y., Yung, K. P., Yu, Y. M., & Kwok, C. W. (2015). Cross-cultural and comparative epidemiology of insomnia: the Diagnostic and statistical manual (DSM), International classification of diseases (ICD) and International classification of sleep disorders (ICSD). Sleep medicine, 16(4), 477-482.
- Bonnet, M. H., & Arand, D. L. (2010). Hyperarousal and insomnia: state of the science. Sleep medicine reviews, 14(1), 9-15.
- Allen, R. P., Picchietti, D. L., Garcia-Borreguero, D., Ondo, W. G., Walters, A. S., Winkelman, J. W., … & Lee, H. B. (2014). Restless legs syndrome/Willis–Ekbom disease diagnostic criteria: updated International Restless Legs Syndrome Study Group (IRLSSG) consensus criteria–history, rationale, description, and significance. Sleep medicine, 15(8), 860-873.
