Sleep 2017-11-22T12:07:29+00:00

1.Why do we sleep?

Sleep seems to be necessary to ensure proper functioning of the nervous system. Inadequate sleep can lead to numerous problems such as drowsiness, poor concentration, memory problems, and worsened physical performance. Prolonged lack of sleep can cause hallucinations and mood changes. Some experts feel that neurons (cells of the nervous system) become depleted of energy or filled with byproducts of cellular activity and that sleep allows them to repair themselves. Sleep might also offer an opportunity to exercise connections within the nervous system. 

2. A circadian rhythm refers to…

 The term “circadian rhythm” refers to changes in physiology, behavior, or mental processes that follow an approximate 24-hour cycle. Circadian rhythms are thought to be related to the light and darkness in the external environment; it is believed light can affect expression of genes that control body processes. These rhythms can influence the sleep cycle and other body functions. Abnormalities in circadian rhythms are thought to be related to health problems such as depression, obesity, diabetes, and sleep disorders

3. How many stages of sleep are there?

 The sleep cycle progresses through stages 1-4, and another stage known as REM (rapid eye movement) sleep. The cycle repeats itself after REM sleep has passed. Almost half our sleep is spent in stage 2, with about 20% in REM sleep and 30% in all the other stages combined. Infants spend about 50% of their sleep time in REM sleep.

4. Adults need less sleep as they age.

 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.

5.Not getting enough sleep can lead to weight gain.

everal 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

5.Not getting enough sleep can lead to weight gain.

Several studies have shown that not getting enough sleep or a decrease in sleep quality can affect appetite controls and lead to overeating.

6. Which group needs up to 10 hours of sleep per night?

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.

7. Sleep disorders and chronic sleep loss are linked to the following.

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.

8. What is sleep hygiene?

Sleep hygiene is the sum of practices that promote regular, restful sleep. Components of sleep hygiene can include going to bed and rising at regular hours every day, making the bedroom relaxing and inviting, using the bed only for sleeping, and removing personal electronic devices and TVs from the bedroom.

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

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.

10. You should shut down all your electronic devices, such as your smartphone, tablet, and laptop, before trying to go to sleep.

The light given off by electronic devices can block the production of Melatonin your brain produces to help you fall and stay asleep.

11. 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.

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 from one night to a few weeks.

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