What to know about sleep deprivation.

There are many things you probably don't know about sleep.
Well, sleep have different meaning. It's the state of reduced consciousness during which a human or animal rests in a daily rhyme. Sleep is also a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhabited sensory activity, a habitation of nearly all voluntary muscles and reduced interactions with the surroundings. The normal estimated time for sleep being spent by humans is 1/3 and the longest period without sleep is 11 days.

Sleep deprivation: The first attempt on this extreme and wilful stunts on sleep deprivation was done by Peter Tripp 1959. He did not sleep for 201 hours or 8.4 days.

He was monitored in a makeshift laboratory. T r i p p salford from paranoia and multiple hallucinations 4 days after he accomplished his historical stunts. He achieved this record when he was only 17 years old. But the current is 11 days by Randy Gardner in 1964.

Longest sleep: The world longest haven't been discovered yet.But, there are many people who attempted to sleep long to break records. A man has attempted 18 days without sleep. But the world best haven't been discovered.
     All living things needs rest breakdown. Not only living things but everything needs rest. Sleep deprivation kills faster than food deprivation. There are lots of disastrous things sleep deprivation can do to your health.

Stimulants like caffeine aren’t enough to override your body’s profound need for sleep. Behind the scenes, chronic sleep deprivation can interfere with your body’s internal systems and cause more than just the initial signs and symptoms listed above. Read on to learn exactly how sleep deprivation affects specific body functions and systems.

Central nervous system

Your central nervous system is the information highway of your body. Sleep is necessary to keep it functioning properly, but chronic insomnia can disrupt how your body usually sends information.

During sleep, pathways form between nerve cells (neurons) in your brain that help you remember new information you’ve learned. Sleep deprivation leaves your brain exhausted, so it can’t perform its duties as well. You may also find it more difficult to concentrate or learn new things. The signals your body sends may also come at a delay, decreasing your coordination skills and increasing your risks for accidents.

Sleep deprivation also negatively affects your mental abilities and emotional state. You may feel more impatient or prone to mood swings. It can also compromise decision-making processes and creativity.



If sleep deprivation continues long enough, you could start having hallucinations—seeing or hearing things that aren’t there. A lack of sleep can also trigger mania in people who have manic depression. Other psychological risks include:

impulsive behavior
depression
paranoia
suicidal thoughts
You may also end up experiencing microsleep in the day. During these episodes, you’ll fall asleep for a few seconds or minutes without realizing it. Microsleep is out of your control and can be extremely dangerous if you’re driving. It can also make you more prone to injury due to trips and falls.

Immune system

While you sleep, your immune system produces protective, infection-fighting substances like cytokines. It uses these substances to combat foreign invaders such as bacteria and viruses. Cytokines also help you sleep, giving your immune system more energy to defend your body against illness.

Sleep deprivation prevents your immune system from building up its forces. If you don’t get enough sleep, your body may not be able to fend off invaders. It may also take you longer to recover from illness. Long-term sleep deprivation also increases your risk for chronic illnesses like diabetes and heart disease.

Respiratory system

The relationship between sleep and the respiratory system goes both ways. A nighttime breathing disorder called obstructive sleep apnea (OSA) can interrupt your sleep and lower the quality of your sleep. As you wake up throughout the night, this can cause sleep deprivation, which leaves you more vulnerable to respiratory infections like the common cold and flu. Sleep deprivation can also make existing respiratory diseases worse, such as chronic lung illness.


Digestive system

Along with eating too much and not exercising, sleep deprivation is another risk factor for becoming overweight and obesity. Sleep affects the levels of two hormones, leptin and ghrelin, which control feelings of hunger and fullness.

Leptin tells your brain that you’ve had enough to eat. Without enough sleep, your brain reduces leptin and raises ghrelin, which is an appetite stimulant. The flux of these hormones could explain nighttime snacking or why someone may overeat later in night. A lack of sleep can also contribute to weight gain by making you feel too tired to exercise.

Sleep deprivation also prompts your body to release higher levels of insulin after you eat. Insulin controls your blood sugar level. Higher insulin levels promote fat storage and increase your risk for type 2 diabetes.

Cardiovascular system

Sleep affects processes that keep your heart and blood vessels healthy, including your blood sugar, blood pressure, and inflammation levels. It also plays a vital role in your body’s ability to heal and repair the blood vessels and heart.

People who don’t sleep enough are more likely to get cardiovascular disease. One analysis published in the European Journal of Preventive Oncology linked insomnia to an increased risk of heart attack and stroke.


Endocrine system

Hormone production is dependent on your sleep. For testosterone production, you need at least three hours of uninterrupted sleep, which is about the time of your first REM episode. Waking up throughout the night could affect hormone production.

This interruption can also affect growth hormone production, especially in children and adolescents. These hormones help build muscle mass and repair cells and tissues. The pituitary gland releases growth hormones continuously, but sleep and exercise also help induce the release of this hormone.
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