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  • Question 1/13

    How many times a day is your body programmed to feel sleepy?

  • Answer 1/13

    How many times a day is your body programmed to feel sleepy?

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    • Correct Answer:

    Our bodies are programmed for two natural periods of sleepiness during a 24-hour day, no matter how much sleep we've had in the previous 24 hours. The primary period is between midnight and 7 a.m., and a second period occurs in the midafternoon, between 1 p.m. and 4 p.m.

  • Question 1/13

    Which group needs up to 13  hours of sleep per night?

  • Answer 1/13

    Which group needs up to 13  hours of sleep per night?

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    • Correct Answer:

    Sleep needs vary from person to person, and they change throughout a person’s lifecycle. Children in preschool need 11 to 13 hours of sleep per night. Newborns sleep up to 18 hours a day, and school-aged children (up to age 12) need 10 to 11 hours. Adolescents need about nine hours of sleep a night, and most adults need seven to nine hours of sleep.

  • Question 1/13

    Adults need less sleep as they grow older.

  • Answer 1/13

    Adults need less sleep as they grow older.

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    • Correct Answer:

    Poor sleep is not a normal part of aging. As we get older, we often get less sleep because our ability to sleep for long periods of time and get into the deep restful stages of sleep can decrease. Older people have more fragile sleep and are more easily disturbed by light, noise, and pain. They also may have medical conditions that contribute to sleep problems.

  • Question 1/13

    About half your sleeping hours are spent dreaming.

  • Answer 1/13

    About half your sleeping hours are spent dreaming.

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    • Correct Answer:

    On average, we spend about two hours dreaming each night, or 20% to 25% of a night’s sleep. Some researchers think dreams are merely a byproduct of sleep, but others believe they’re important for mood regulation, problem solving, and stress reduction.

  • Answer 1/13

    Which of the following is the most common cause of nightmares?

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    • Correct Answer:

    Nightmares, which are dreams that cause high levels of distress or terror, occur more often when you are stressed or anxious. They are more likely to occur in the last third of the night and tend to be more common among children than adults.

  • Question 1/13

    Sleepwalking may include other complex activities, such as:

  • Answer 1/13

    Sleepwalking may include other complex activities, such as:

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    • Correct Answer:

    Sleepwalking may include simply sitting up and appearing awake, or it may involve complex activities, such as moving furniture, going to the bathroom, eating, or, in rare instances, driving. Sleepwalking occurs more often in children and appears to run in families.

  • Question 1/13

    Driving while drowsy is similar to driving while intoxicated.

  • Answer 1/13

    Driving while drowsy is similar to driving while intoxicated.

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    • Correct Answer:

    Drowsiness can be as dangerous as driving drunk; research has indicated that it’s comparable to driving with a blood-alcohol level of 0.08, the legal limit for intoxication in many states. The problem is greatest among males aged 16 to 29, people who work irregular shifts, and people with untreated sleep apnea.

  • Question 1/13

    If you fall a few hours behind in the amount of sleep your body needs, you can never make it up.

  • Answer 1/13

    If you fall a few hours behind in the amount of sleep your body needs, you can never make it up.

    • You answered:
    • Correct Answer:

    If you don’t get the amount of sleep your body needs (typically 7 to 9 hours per night for adults), you start to accumulate a “sleep debt.” You can pay off a debt of a few hours by getting extra sleep over the next week or so, which is why you may have such a strong urge to sleep in on Saturday mornings. However, if the debt remains unresolved and continues to mount, you could be at increased risk for accidents or injury.

  • Question 1/13

    Which of the following can result from not getting enough sleep?

  • Answer 1/13

    Which of the following can result from not getting enough sleep?

    • You answered:
    • Correct Answer:

    In addition to blurred vision, not getting enough sleep can cause fatigue, irritability, and an inability to concentrate. Because these can be symptoms of other conditions as well, it may be helpful to keep a sleep journal and discuss your issues with your doctor.

  • Question 1/13

    Not getting enough sleep can lead to weight gain.

  • Answer 1/13

    Not getting enough sleep can lead to weight gain.

    • You answered:
    • Correct Answer:

    Several studies have shown that not getting enough sleep or a decrease in sleep quality can affect appetite controls and lead to overeating. Sleep loss has also been tied to decreased insulin sensitivity and increased risk of diabetes.

  • Question 1/13

    Sleep disorders and chronic sleep loss have been linked to which of the following?

  • Answer 1/13

    Sleep disorders and chronic sleep loss have been linked to which of the following?

    • You answered:
    • Correct Answer:

    Poor sleep can contribute to heart disease, and heart disease can interrupt sleep. Poor sleep also has been associated with high blood pressure and stroke. Experts believe that such factors as inflammation and stress play a role. For example, with sleep apnea, pauses in breathing during sleep and low oxygen levels stress the body and promote inflammation. 

  • Question 1/13

    Insomnia is considered chronic when a person has difficulty falling asleep or staying asleep at least two nights a week for a month or longer.

  • Answer 1/13

    Insomnia is considered chronic when a person has difficulty falling asleep or staying asleep at least two nights a week for a month or longer.

    • You answered:
    • Correct Answer:

    Chronic insomnia is when a person has difficulty falling asleep or staying asleep at least three nights a week for a month or longer. Acute insomnia can last for a few nights to a few weeks.

  • Question 1/13

    Sleep apnea is characterized by pauses in breathing while you sleep. These pauses can occur how many times per hour?

  • Answer 1/13

    Sleep apnea is characterized by pauses in breathing while you sleep. These pauses can occur how many times per hour?

    • You answered:
    • Correct Answer:

    Breathing pauses associated with sleep apnea often occur five to 30 times or more per hour and can last from a few seconds to a few minutes, resulting in poor sleep that makes you tired during the day. The most common type of sleep apnea is obstructive sleep apnea, which usually is caused by the airway collapsing or being blocked during sleep. 

     

    Common signs of obstructive sleep apnea include loud snoring, morning headaches, irritability, memory and concentration problems, and a dry throat upon waking. Most people with sleep apnea don’t know they have the condition, and it often goes undiagnosed.

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Sources | Reviewed by William Blahd, MD on October 12, 2015 Medically Reviewed on October 12, 2015

Reviewed by William Blahd, MD on
October 12, 2015

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SOURCES:

National Institutes of Health: "Problem Sleepiness."

National Institutes of Health: "Sleep & Growing Older."

Harvard Medical School: "Assess Your Sleep Needs."

National Institutes of Health: "Information About Sleep."

WebMD the Magazine - Feature: “The Health Benefits of Dreams.”

WebMD Health News: “Dreams Can Solve Problems.”

American Academy of Sleep Medicine: "Dreams & Nightmares."

American Academy of Sleep Medicine: "Nightmares."

American Academy of Sleep Medicine: "Sleepwalking."

New York State Department of Health: "Stay Awake, Stay Alive! Don’t Drive Drowsy."

National Highway Traffic Safety Administration: "Drowsy Driving and Automobile Crashes."

National Sleep Foundation: "How Much Sleep Do We Really Need?"

Stanford University: "Sleepless at Stanford."

Stanford University: "Sleep (Sleep Debt)."

Villanova University: "Symptoms of Sleep Deprivation."

PubMed.gov: "Associations Between Sleep Loss and Increased Risk of Obesity and Diabetes."

PubMed.gov: "Role of Sleep Duration in the Regulation of Glucose Metabolism and Appetite."

Harvard Medical School: "Poor Sleep Habits – Heart Disease and Sleep Apnea."

American Heart Association: "Inflammation, Heart Disease and Stroke."

Cleveland Clinic: "Common Sleep Disorders."

National Heart Lung and Blood Institute: "What Is Sleep Apnea?"

National Heart Lung and Blood Institute: "What Are the Signs and Symptoms of Sleep Apnea?"

National Sleep Foundation: "Let Sleep Work for You."

This tool does not provide medical advice.
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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.