o what is commonly known as deep

April 20, 2019 Health

o understand sleep deficiency, it helps to understand how sleep works and why it’s important. The two basic types of sleep are rapid eye movement (REM) and non-REM.

Non-REM sleep includes what is commonly known as deep sleep or slow wave sleep. Dreaming typically occurs during REM sleep. Generally, non-REM and REM sleep occur in a regular pattern of 3–5 cycles each night.

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Your ability to function and feel well while you’re awake depends on whether you’re getting enough total sleep and enough of each type of sleep. It also depends on whether you’re sleeping at a time when your body is prepared and ready to sleep.

You have an internal “body clock” that controls when you’re awake and when your body is ready for sleep. This clock typically follows a 24-hour repeating rhythm (called the circadian rhythm). The rhythm affects every cell, tissue, and organ in your body and how they work. (For more information, go to “What Makes You Sleep?”)

If you aren’t getting enough sleep, are sleeping at the wrong times, or have poor quality sleep, you’ll likely feel very tired during the day. You may not feel refreshed and alert when you wake up.

Sleep deficiency can interfere with work, school, driving, and social functioning. You might have trouble learning, focusing, and reacting. Also, you might find it hard to judge other people’s emotions and reactions. Sleep deficiency also can make you feel frustrated, cranky, or worried in social situations.

The signs and 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.

Outlook
Sleep deficiency is a common public health problem in the United States. People in all age groups report not getting enough sleep.

As part of a health survey for the Centers for Disease Control and Prevention, about 7–19 percent of adults in the United States reported not getting enough rest or sleep every day.

Nearly 40 percent of adults report falling asleep during the day without meaning to at least once a month. Also, an estimated 50 to 70 million Americans have chronic (ongoing) sleep disorders.

Sleep deficiency is linked to many chronic health problems, including heart disease, kidney disease, high blood pressure, diabetes, stroke, obesity, and depression.

Sleep deficiency also is associated with an increased risk of injury in adults, teens, and children. For example, driver sleepiness (not related to alcohol) is responsible for serious car crash injuries and death. In the elderly, sleep deficiency might be linked to an increased risk of falls and broken bones.

In addition, sleep deficiency has played a role in human errors linked to tragic accidents, such as nuclear reactor meltdowns, grounding of large ships, and aviation accidents.

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.

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