Sleep

If you don't fall asleep within about 20 minutes of going to bed, leave your bedroom and do something relaxing. Read or listen to soothing music. Go back to bed when you're tired. Repeat as needed, but continue to maintain your sleep schedule and wake-up time.

sleep

Nicotine, caffeine and alcohol deserve caution, too. The stimulating effects of nicotine and caffeine take hours to wear off and can interfere with sleep. And even though alcohol might make you feel sleepy at first, it can disrupt sleep later in the night.

Keep your room cool, dark and quiet. Exposure to light in the evenings might make it more challenging to fall asleep. Avoid prolonged use of light-emitting screens just before bedtime. Consider using room-darkening shades, earplugs, a fan or other devices to create an environment that suits your needs.

Nearly everyone has an occasional sleepless night. However, if you often have trouble sleeping, contact your health care provider. Identifying and treating any underlying causes can help you get the better sleep you deserve.

Vivien Williams: Poor sleep may increase your risk of conditions such as heart disease, obesity, depression, dementia. And it even affects how you look. Dr. Somers offers the following tips: Avoid alcohol and big meals before bed; don't exercise right before bed; and turn off all screens, including your smartphone, an hour before bed.

Dr. Somers: We've got bright lights all over the place, and then we switch the lights off, we lie in bed and expect to sleep. The bedroom, the bed is for sex and sleep. It's not for spreadsheets, it's not for watching TV.

Sleep deficiency can lead to physical and mental health problems, injuries, loss of productivity, and even a greater likelihood of death. To understand sleep deficiency, it helps to understand what makes you sleep and how it affects your health.

The symptoms of sleep deficiency may differ between children and adults. Children who are sleep deficient might be overly active and have problems paying attention. They also might misbehave, and their school performance can suffer.

Sleep deficiency is also linked to a higher chance of injury in adults, teens, and children. For example, sleepiness while driving (not related to alcohol) is responsible for serious car crash injuries and death. In older adults, sleep deficiency may be linked to a higher chance of falls and broken bones.

A common myth is that people can learn to get by on little sleep with no negative effects. However, research shows that getting enough quality sleep at the right times is vital for mental health, physical health, quality of life, and safety.

Join the American Academy of Sleep Medicine to share perspectives, exchange best practices, learn the latest developments, and network.If you are a physician, researcher, technologist, nurse, student or other allied health professional, this sleep organization is for you.Learn About Individual Membership

Keep a sleep diary [PDF - 53 KB] for a week and share it with your doctor. A doctor can suggest different sleep routines or medicines to treat sleep disorders. Talk with a doctor before trying over-the-counter sleep medicine.

Sleep is important to a number of brain functions, including how nerve cells (neurons) communicate with each other. In fact, your brain and body stay remarkably active while you sleep. Recent findings suggest that sleep plays a housekeeping role that removes toxins in your brain that build up while you are awake.

Sleep is a complex and dynamic process that affects how you function in ways scientists are now beginning to understand. This booklet describes how your need for sleep is regulated and what happens in the brain during sleep.

The thalamus acts as a relay for information from the senses to the cerebral cortex (the covering of the brain that interprets and processes information from short- to long-term memory). During most stages of sleep, the thalamus becomes quiet, letting you tune out the external world. But during REM sleep, the thalamus is active, sending the cortex images, sounds, and other sensations that fill our dreams.

The basal forebrain, near the front and bottom of the brain, also promotes sleep and wakefulness, while part of the midbrain acts as an arousal system. Release of adenosine (a chemical by-product of cellular energy consumption) from cells in the basal forebrain and probably other regions supports your sleep drive. Caffeine counteracts sleepiness by blocking the actions of adenosine.

There are two basic types of sleep: rapid eye movement (REM) sleep and non-REM sleep (which has three different stages). Each is linked to specific brain waves and neuronal activity. You cycle through all stages of non-REM and REM sleep several times during a typical night, with increasingly longer, deeper REM periods occurring toward morning.

Stage 1 non-REM sleep is the changeover from wakefulness to sleep. During this short period (lasting several minutes) of relatively light sleep, your heartbeat, breathing, and eye movements slow, and your muscles relax with occasional twitches. Your brain waves begin to slow from their daytime wakefulness patterns.

Stage 2 non-REM sleep is a period of light sleep before you enter deeper sleep. Your heartbeat and breathing slow, and muscles relax even further. Your body temperature drops and eye movements stop. Brain wave activity slows but is marked by brief bursts of electrical activity. You spend more of your repeated sleep cycles in stage 2 sleep than in other sleep stages.

Stage 3 non-REM sleep is the period of deep sleep that you need to feel refreshed in the morning. It occurs in longer periods during the first half of the night. Your heartbeat and breathing slow to their lowest levels during sleep. Your muscles are relaxed and it may be difficult to awaken you. Brain waves become even slower.

REM sleep first occurs about 90 minutes after falling asleep. Your eyes move rapidly from side to side behind closed eyelids. Mixed frequency brain wave activity becomes closer to that seen in wakefulness. Your breathing becomes faster and irregular, and your heart rate and blood pressure increase to near waking levels. Most of your dreaming occurs during REM sleep, although some can also occur in non-REM sleep. Your arm and leg muscles become temporarily paralyzed, which prevents you from acting out your dreams. As you age, you sleep less of your time in REM sleep. Memory consolidation most likely requires both non-REM and REM sleep.

Sleep-wake homeostasis keeps track of your need for sleep. The homeostatic sleep drive reminds the body to sleep after a certain time and regulates sleep intensity. This sleep drive gets stronger every hour you are awake and causes you to sleep longer and more deeply after a period of sleep deprivation.

Factors that influence your sleep-wake needs include medical conditions, medications, stress, sleep environment, and what you eat and drink. Perhaps the greatest influence is the exposure to light. Specialized cells in the retinas of your eyes process light and tell the brain whether it is day or night and can advance or delay our sleep-wake cycle. Exposure to light can make it difficult to fall asleep and return to sleep when awakened.

Night shift workers often have trouble falling asleep when they go to bed, and also have trouble staying awake at work because their natural circadian rhythm and sleep-wake cycle is disrupted. In the case of jet lag, circadian rhythms become out of sync with the time of day when people fly to a different time zone, creating a mismatch between their internal clock and the actual clock.

Millions of people are using smartphone apps, bedside monitors, and wearable items (including bracelets, smart watches, and headbands) to informally collect and analyze data about their sleep. Smart technology can record sounds and movement during sleep, journal hours slept, and monitor heart beat and respiration. Using a companion app, data from some devices can be synced to a smartphone or tablet, or uploaded to a PC. Other apps and devices make white noise, produce light that stimulates melatonin production, and use gentle vibrations to help us sleep and wake.

Your health care provider may recommend a polysomnogram or other test to diagnose a sleep disorder. A polysomnogram typically involves spending the night at a sleep lab or sleep center. It records your breathing, oxygen levels, eye and limb movements, heart rate, and brain waves throughout the night. Your sleep is also video and audio recorded. The data can help a sleep specialist determine if you are reaching and proceeding properly through the various sleep stages. Results may be used to develop a treatment plan or determine if further tests are needed.

Insomnia is the most common sleep problem in adults age 60 and older. People with this condition have trouble falling asleep and staying asleep. Insomnia can last for days, months, and even years. Having trouble sleeping can mean you:

People with sleep apnea have short pauses in breathing while they are asleep. These pauses may happen many times during the night. If not treated, sleep apnea can lead to other problems, such as high blood pressure, stroke, or memory loss.

If you think you have sleep apnea, see a doctor who can treat this sleep problem. You may need to learn to sleep in a position that keeps your airways open. Treatment using a continuous positive airway pressure (CPAP) device almost always helps people with sleep apnea. A dental device or surgery may also help.

Some people find that relaxing their bodies puts them to sleep. One way to do this is to imagine your toes are completely relaxed, then your feet, and then your ankles are completely relaxed. Work your way up the rest of your body, section by section. You may drift off to sleep before getting to the top of your head. 041b061a72