Colin Snow
Sleepwalking is a common phenomenon, with up to 40% of children experiencing it at least once and 1-2.5% of adults. While it is generally agreed that waking a sleepwalker is not dangerous, it is also not recommended. Sleepwalkers are in a deep sleep and are difficult to wake, and if you do succeed in waking them, they may feel disoriented and distressed. If you must wake a sleepwalker, it is best to do so by calling their name or speaking loudly, rather than by touching or shaking them, as this may provoke a stress response. Instead, it is recommended to gently guide them back to bed by taking their hand or elbow without waking them.
Characteristics and Values of Waking a Sleeper
| Characteristics | Values |
|---|---|
| Sleep Cycle | 4 to 6 cycles are ideal, each lasting 90-110 minutes |
| Sleep Stages | Wake, NI, N2, N3, and REM |
| Sleep Quality | A night of poor sleep won't impact health, but long-term sleep deprivation can lead to chronic diseases and early death |
| Sleep Duration | 7 to 9 hours of sleep is ideal for adults, but needs change with age |
| Sleep Timing | Consistent sleep and wake-up times help maintain a regular circadian rhythm |
| Sleep Disorders | Conditions disrupting sleep include narcolepsy, jet lag, sleep apnea, and restless leg syndrome |
| Sleep Tests | Actigraphy, Multiple Sleep Latency Test (MSLT), and Maintenance of Wakefulness Test (MWT) |
| Sleep-Wake Cycle | Regulated by melatonin, influenced by light exposure and controlled by the hypothalamus and brain stem |
| Sleep and Health | Sleep affects weight, metabolism, brain function, and mood |
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What You'll Learn
Sleep stages and cycles
Sleep is not uniform. Instead, over the course of the night, your total sleep is made up of several rounds of the sleep cycle, which is composed of four individual stages. In a typical night, a person goes through four to six sleep cycles lasting around 90 minutes each. The first sleep cycle is often the shortest, ranging from 70 to 100 minutes, while later cycles tend to be longer, ranging from 90 to 120 minutes. The sleep stages allow the brain to recuperate from the day and support multiple functions.
The two phases of sleep are rapid eye movement (REM) and non-rapid eye movement (NREM) sleep. NREM sleep is further divided into three stages: N1, N2, and N3. During N1 sleep, the body has not fully relaxed, and the body and brain activities start to slow down with periods of brief movements. It is easy to wake someone up during this sleep stage, but if uninterrupted, they can quickly move into stage 2. During stage 2, or N2, the body enters a more subdued state, including a drop in temperature, relaxed muscles, and slowed breathing and heart rate. Brain activity slows down, but there are short bursts of activity.
After stage 2 NREM sleep, the body moves into stage 3 NREM, which is deep sleep or slow-wave sleep. This is the stage where the body fully relaxes and repairs itself. Without enough stage 3 sleep, you will feel tired and drained even if you slept for a long time. That is why your body automatically tries to get as much stage 3 sleep as possible early in the night. Stage 3 NREM sleep is so deep that it is hard to wake someone up from it. If they do wake up, they will likely experience sleep inertia, a state of confusion or mental fog that lasts about 30 minutes.
After stage 3 NREM sleep, the body moves into the REM stage. During REM sleep, the eyes twitch, and brain activity is similar to that during waking hours. REM sleep is when most dreams occur, and it is important for learning and memory. Each cycle starts over every 80 to 100 minutes, and the first REM stage is usually the shortest, lasting about 10 minutes. As sleep progresses, the REM stage gets longer compared to NREM sleep.
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Sleep disorders
There are more than 80 types of sleep disorders, with some of the most common being:
- Insomnia: Insomnia is the most common sleep disorder, with 33-50% of adults experiencing symptoms. People with insomnia have trouble falling or staying asleep and often feel drowsy. Insomnia can be caused by poor sleep habits, environmental changes, medications, and co-occurring medical conditions.
- Sleep apnea: Sleep apnea is a breathing disorder characterized by pauses in breathing during sleep, which can last for 10 seconds or longer.
- Restless leg syndrome: This disorder involves a tingling or prickly sensation in the legs, along with a powerful urge to move them.
- Hypersomnia: People with hypersomnia often oversleep (over 10 hours a night) but still feel groggy. They may experience sleep attacks or hallucinations. Narcolepsy is a type of hypersomnia and is caused by a lack of orexin brain chemicals.
- Circadian rhythm disorders: These disorders are caused by a person's internal body clock being out of sync with the external light-dark cycle. This can lead to insomnia or repeated waking, resulting in sleepiness and focus and mood problems.
- Parasomnia: Parasomnia involves acting in unusual ways while falling asleep, sleeping, or waking from sleep, such as walking, talking, or eating. Sleepwalking is a type of parasomnia.
Treatment for sleep disorders varies depending on the specific disorder but may include good sleep habits, lifestyle changes, cognitive behavioral therapy, relaxation techniques, medication, and the use of CPAP machines or natural products like melatonin.
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Sleep and health
Sleep is essential for maintaining a healthy brain and body. The amount of sleep one needs changes throughout their lifetime, and it is influenced by factors such as age, lifestyle, and individual differences. Most adults require 7 to 8 hours of sleep each night for optimal health. However, it's not just about the quantity of sleep but also the quality and regularity of sleep patterns.
Sleep deprivation can have significant negative consequences on one's health and well-being. It impairs cognitive functions such as concentration, memory, and decision-making abilities. Research suggests that sleep deprivation can worsen mental health symptoms, including depression, anxiety, paranoia, and hallucinations. It can also increase emotional instability, causing extreme sadness or anger. Additionally, not getting enough sleep is linked to several leading causes of death in the US.
To improve sleep quality and duration, it is recommended to maintain a consistent sleep schedule, minimize distractions in the bedroom, and limit exposure to electronic devices before bedtime. Creating a relaxing environment, avoiding caffeine and alcohol, and seeking professional help for underlying sleep disorders are also advised.
Using tools such as sleep calculators and sleep diaries can help individuals determine their optimal sleep patterns and identify any sleep disorders. By prioritizing sleep and adopting healthy sleep habits, individuals can promote overall health and prevent serious health conditions.
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Sleep and age
As we age, our bodies undergo various changes that can impact our sleep patterns and quality. One of the primary factors is the shift in circadian rhythms, also known as the body's internal clock, which regulates our sleep-wake cycles. This shift, referred to as a phase advance, often results in older adults feeling tired earlier in the afternoon and waking up earlier in the morning. Additionally, they experience changes in their sleep architecture, spending more time in the lighter stages of sleep and less time in the deeper stages, leading to more frequent awakenings during the night.
Hormonal changes also play a significant role in sleep disturbances among older adults. The production of melatonin, a hormone that promotes sleep, decreases with age. This reduction in melatonin levels can disrupt the coordination of circadian rhythms, making it more challenging for older individuals to fall and stay asleep. Furthermore, changes in the production of other hormones, such as cortisol, may also contribute to sleep disruptions.
Medical conditions and medications are other factors that can influence sleep in older adults. Conditions like depression, anxiety, heart disease, diabetes, and arthritis commonly affect sleep patterns and quality. Additionally, older adults often manage multiple health conditions, increasing the likelihood of sleep disturbances and poor sleep quality. The medications used to manage these conditions can also impact sleep. Certain drugs may cause daytime sleepiness, make it challenging to fall asleep at night, or exacerbate underlying sleep disorders.
Lifestyle changes associated with aging, such as retirement, loss of independence, and social isolation, can also contribute to sleep issues. These changes can increase stress and anxiety, negatively impacting sleep. Additionally, older adults may experience a decrease in physical activity, which can disrupt the normal sleep-wake cycle. Social interactions provide important cues that help maintain a healthy sleep rhythm, and social isolation can disrupt this balance.
While aging can bring about changes in sleep patterns and quality, it is important to note that the recommended sleep guidelines for adults across different age groups remain relatively consistent. According to the National Sleep Foundation, adults between 18 and 64 years should aim for seven or more hours of sleep nightly, while those 65 and older should strive for seven to eight hours. However, older adults may experience sleep disturbances and feel sleep-deprived even when their total sleep time has not significantly changed.
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Sleep and mental health
The relationship between sleep and mental health is bidirectional, meaning that sleeping problems may be both a cause and a consequence of mental health issues. Sleep deprivation or poor-quality sleep can increase the risk of mental health disorders, including depression, anxiety, and even suicidal ideation. Additionally, people with mental health disorders are more likely to experience chronic sleep problems, which can, in turn, exacerbate their psychiatric symptoms.
Living with a mental health disorder can affect sleep quality and duration. Stress, worries, and health conditions related to sleep can all impact an individual's sleep patterns. For example, insomnia, characterized by difficulty falling asleep, staying asleep, or waking up too early, is a common sleep disorder that can result in daytime impairments and is often associated with mental health disorders.
It is important to note that improving sleep quality and quantity can positively impact mental health. Healthy sleep habits, such as adopting relaxation techniques and stimulus control, can help improve sleep. For more chronic cases of insomnia, professional help, such as cognitive-behavioral therapy for insomnia (CBT-I), may be beneficial. By addressing sleep problems, individuals can alleviate the severity of psychiatric disorders and improve their overall mental well-being.
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Frequently asked questions
No, it is generally not recommended to wake a sleep talker. Sleep talking is a harmless phenomenon and the person is usually unaware of what they are saying. Waking them can disrupt their sleep and it is unlikely to stop the behavior.
While it is generally safe to guide a sleepwalker back to bed, it is important to do so carefully and gently. Waking them abruptly can lead to confusion, disorientation, and even aggression in some cases.
Sleep apnea is a serious condition where breathing stops and starts during sleep. If someone is not waking up due to sleep apnea, it is crucial to seek immediate medical attention as it can be life-threatening.
The method of waking someone with a sleep disorder depends on the specific condition. For example, with narcolepsy, a person may benefit from a consistent sleep schedule, regular naps, and stimulants prescribed by a doctor. In contrast, for insomnia, one may need sleep restriction therapy or cognitive-behavioral therapy to improve sleep hygiene.
Yes, it is often possible to guide a sleepwalker back to bed. Speak to them in a calm, gentle voice, and lead them by the arm. Ensure their path is clear of any obstacles, and once they are safely in bed, they should return to a normal sleep state.
