Why is Sleep Important
We spend A good third of our lives sleeping. A waste of time, many people may wonder.
Why are we sleeping anyway? Does it have to be that way? What happens in the body when we sleep? And what does the brain do at night? Here are the answers.
Sleep is essential
Without sleep, we won’t be able to function in life. Some people manage to stay awake for a few days – but then the body cannot sustain itself without sleep at some point they fall asleep.
Lack of sleep damages the mental and physical health. Sleep deprivation is a torture method: After just 24 hours of sleep deprivation, the brain reacts with hallucinations.
Only in sleep do the regeneration processes that we need for our waking hours run. our organic regeneration, the simultaneous activity can get overwhelmed.
The assumption that our body is only resting during sleep is a widespread misconception. Even at night, our body works at full speed.
When we have slept well, we feel fresh and rested, the next morning it is a new day. The body feels good – and our mood makes it easy to start the day, maybe even with a smile.
Anyone who sleeps well and sufficiently regularly is overall physically and mentally more efficient, rarely gets sick and feels good.
Sleep increases the quality of life make us feel optimistic and as a positive effect on our well being. Good night sleep is an important pillar of mental and physical well-being.
not sleeping enough makes you mentally and physically ill
In addition to the cycle of increasing well-being with good and sufficient sleep, there is a downward spiral in disturbed sleep.
Even those who have slept only one night worse than usual gets heavy in the morning not feeling alert also irritated.
Now it is reasonable and not problematic if from time to time we have a lousy night, but otherwise, we usually sleep well.
Permanent lack of sleep, however, inevitably leads to severe physical and mental problems.
The first episodes of lack of sleep are persistent fatigue and tiredness, or lack of energy. These limit the mental and physical performance.
That, in turn, affects work, family, and leisure. Example, when I react quickly irritated because I am tired– causing conflict. If you can not concentrate, you make mistakes – and get into trouble and stress at work, or cause a traffic accident.
Lack of sleep also makes you physically or mentally ill. when the immune system has no opportunity to regenerate sufficiently during sleep, infections are more common.
what happens if the metabolism does not get time to do the daily cleanup, the organism as a whole suffers.
If the soul does not find relaxation while sleeping, depression or burnout are common. Lack of sleep shortens life expectancy.
Sleep – is more than just a time of rest
Going to bed Tired and drain, It’s almost like a miracle: you go to bed – and the next morning we wake up feeling rested and fresh.
Even illnesses sometimes pass in sleep. Doctors sometimes put patience into artificial sleep in the event of serious illness, so that they can recover better.
You would only view sleep only as a time of rest when viewed superficially. The organism is running at full speed during the night.
Sleep hormone melatonin
Hormones play a unique role. Melatoninsome times called the sleep hormone.
A high concentration of melatonin in the blood promotes sleep, whereas melatonin deficiency can be the cause of inadequate sleep or sleep disorders.
But not every fluctuation in melatonin concentration is pathological: on the contrary, the melatonin level, for example, depends heavily on daylight.
When there is plenty of daylight, such as in the summertime, the human body gives less than usual melatonin. And winter is the opposite situation.
there is an increased need for sleep in many people in winter.
We suggest seeing a doctor for treatment concerning melatonin-containing supplements is used as a drug for sleep disorders. The supplements they are often offered on the Internet – self-treatment is not recommended.
On the one hand, the long-term effects of melatonin have not been studied; on the other hand, dietary supplements from the Internet are often of doubtful origin – and unknown composition.
Heart and circulation recover during sleep
Sleep protects us from stroke and diseases of the cardiovascular system.
Shortly after falling asleep, the blood pressure drops significantly, and the pulse slows down beats 50 times a minute.
Theis effects are particularly common in a deep sleep, one of the sleep phases.
This relieves the heart and the blood vessels. This recovery reduces the risk of heart attacks and strokes.
There is some evidence that a sleep duration of more than 7.5 hours reduces the risk better than shorter sleep times, as Japanese researchers in a large study with more than 1200 subjects could prove.
Sleep promotes the immune system
We marvel at Our immune system but it is far from being understood in detail by medicine.
But this much is certain: in sleep, man/woman also recovers from illnesses best.
The immune system, For example, played an essential role, fever is often lowered during sleep.
Reduces inflammation without being distracted by the physical activity of the day. At night, the immune system focuses on the defense against pathogens and
The immune system works particularly well in a deep sleep. This sleep phase is of particular importance.
Lack of sleep, on the other hand, weakens the immune system.
numerous studies have proven this.
Even a short-term lack of sleep can significantly weaken the immune system, as the Lübeck scientist Jan Born points out.
He vaccinated people against hepatitis A. One-half of the people vaccinated slept after the vaccination; the other group had to stay awake until the next evening.
After four weeks, Born measured the levels of antibodies in the subjects’ blood. The participants who were allowed to sleep, the concentration was twice as high as in the comparison group, an apparent effect – after just one night of not sleeping.
what happens during sleep
The brain often more active during sleep than during the day
They tinker with a problem in the evening in vain or try to memorize something without success.
And the next morning, the solution is there by itself! Do you know that? What many people have already experienced was in science for many years as imagination.
People assumed that the brain sleeps at night – and does nothing.
Modern imaging techniques have thoroughly turned this viewpoint upside down. Meanwhile, it is clear: The brain is even more active in parts of the night, in so-called REM sleep than during the day.
Sleep and brain researchers now assume that the brain is intensively occupied during the night to process the information of the day.
For example, the brain sorts the important ones from the unimportant information.
Throughout the day, countless information streams into the brain, primarily through the eyes. Only a fraction of it we consciously perceive.
As you read these lines, you are supposedly dealing only with that content. Many more stimuli arrive in the brain: ambient light, sounds or smell, for example.
Many of the momentarily unimportant stimuli sort out the brain immediately from the conscious perception – otherwise, we could hardly read or drive a car.
What is taken over, for example, in long-term memory, it is not until the night that the brain decides – and what falls into oblivion.
This activity of the brain can be easily and clearly demonstrated with modern imaging techniques and brainwave measurement, the EEG.
It can even be said which brain areas are mainly active at night. What exactly does the brain do in its sleep, however, can only be proven indirectly through experiments.
How Does Sleep Affect Learning
The findings are clear as far as learning success is concerned.
Lack of sleep disturbs the learning success, Many studies prove that good sleep promotes learning success and lack of sleep hinders learning success. Subjects learning to achieve consistently better results are allowed to sleep after than subjects who are banned from sleeping or are awakened at night.
Brain research assumes that what has been learned is processed once more during sleep and stored in long-term memory.
The cerebral cortex is considered the seat of long-term memory. The hippocampus and cerebral cortex exchange during sleep and evaluate which information is usefully taken over into the long-term memory.