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Myths and Facts about Sleep - National Sleep Foundation

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https://www.sleepfoundation.org/articles/myths-and-facts-about-sleep

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Myths and Facts about Sleep - National Sleep Foundation
There are many common myths about sleep. We hear them frequently, and may even experience them far too often. Sometimes they can be characterized as "old wives tales," but there are other times the incorrect information can be serious and even dangerous.

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Snoring isn’t harmful

Although snoring may be harmless for most people, it can be a symptom of a life-threatening sleep disorder called sleep apnea, especially if it is accompanied by severe daytime sleepiness. 

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You can "cheat" on sleep

Sleep experts say most adults need between seven and nine hours of sleep each night for optimum performance, health, and safety. 

The

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Turning up the radio

... opening the window, or turning on the air conditioner are effective ways to stay awake when driving.

These "aids" are ineffective and can be dangerous to the person who is dri...

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Sleeping teens are lazy

According to sleep experts, teens need at least 8 to 10 hours of sleep each night, compared to an average of seven to nine hours each night for most adults. 

Their inte...

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Insomnia

Difficulty falling asleep is one of four symptoms generally associated with insomnia.
The others include waking up too early and not being able to fall back ...

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Daytime sleepiness

Excessive daytime sleepiness is a condition in which an individual feels very drowsy during the day and has an urge to fall asleep when he/she should be fully alert and awake. 

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Quality of sleep

Studies have found a relationship between the quantity a...

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Sleep declines with age

While sleep patterns change as we age, the amount of sleep we need g...

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During sleep, your brain rests

The body rests during sleep, however, the brain remains active, gets "recharged," and still controls many body functions including breathing. 

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Waking up in the middle of the night

Waking up in the middle of the night and not being able to go back to sleep is a symptom of insomnia. 

If you do not fall back asleep within 15-20 minutes, you ...

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Slow-wave sleep (deep sleep) – SWS

About 80% of our sleeping is of the SWS variety, identified by slow brain waves, relaxed muscles and deep breathing.

Deep sleep is important for the consolidation of memories. New experience...

Rapid eye movement (dreaming) - REM

Dreaming accounts for 20% of our sleeping time.

The length of dreams can vary from a few seconds to almost an hour. During REM sleep, the brain is highly active. The muscles are paralyzed, and the heart rate increases. Breathing can become erratic. 

Sleep quantity

Although eight hours is the common mention, optimum sleep can vary from person to person and from age to age.

One review that worked through 320 research articles concluded 7 - 9 hours of sleep are enough for adults. According to experts, too little or too much sleep can both have a negative impact on your health.

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5 hours of sleep is enough

Habitual sleep deprivation is associated with diverse and far-reaching health effects and none of them is good.

Between 7 and 9 hours of sleep per night are recommended. You can get used to l...

Watching Television before bed

Cellphones, tablets, and all kinds of personal electronics are not a good idea when you’re getting ready for bed.

Researchers have increasingly focused on “blue light” emitted by screens and its effect on sleep and negative sleep-related health outcomes.

It doesn’t matter when you sleep

Our bodies tend to follow a natural rhythm of wakefulness and sleep that is attuned to sunrise and sunset for a reason.

While some missed sleep here and there isn’t necessarily a big deal, shifting your sleep schedule long term isn’t healthy.

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The Science of Sleep

The average adult spends 36 % (or about one-third) of his or her life asleep.

Purpose of Sleep:

  • Restoration
  • Memory Consolidation
  • Metabolic Health

Restoration

The first purpose of sleep is restoration.

Every day, your brain accumulates metabolic waste as it goes about its normal neural activities. Sleeping restores the brains healthy condition by removing these waste products. Accumulation of these waste products has been linked to many brain-related disorders.

Memory Consolidation

The second purpose of sleep is memory consolidation.

Sleep is crucial for memory consolidation, which is responsible for your long term memories. Insufficient or fragmented sleep can hamper your ability to remember facts and feelings/emotions.

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