Before the advent of color television, only 15% of people had color dreams. Today we are 75%.
What do we dream about, why can’t we live long without sleep, and what happens to the body while we are dreaming? Interesting facts about sleep and dreams tells Healthyinfo.
1. Every night we go through several cycles of sleep.
When we plunge into the “embrace of Morpheus”, we enter into a slow phase of sleep. We begin to doze, but we are still aware of the surrounding reality, so loud sounds and noises can still disturb our sleep.
Then the body goes through the second, third and fourth stages of slow wave sleep, and then the fun begins! This is the REM phase during which we dream.
Every night a person goes through 4–5 complete sleep cycles, each of which lasts from 90 to 120 minutes.
Did you know?
Studies show that before the full moon, people go to bed later and sleep less. But why this happens no one knows.
2. During sleep, we consolidate the acquired knowledge.
While we sleep, our brain works. During sleep, it transfers information from short-term memory to long-term memory. That is why a person who sleeps little cannot study at full strength. Knowledge simply will not be fixed!
3. We briefly lose the ability to move while we sleep.
This happens during REM sleep, that is, when we dream. And this is necessary for our own safety so that we, under the influence of dreams, do not start kicking, pushing, jumping out of bed and doing other things that we dream about.
This condition usually lasts for a short time, about 20 minutes, and it is called atony.
According to experts, if it takes you less than 5–9 minutes to fall asleep, you are most likely experiencing a sleep deprivation. Falling asleep within 10–15 minutes is considered “norm”.
4. Some people experience sleep paralysis
This is a state where a person suddenly wakes up and realizes that they cannot move, speak or scream. Sometimes it is accompanied by auditory, visual or physical hallucinations.
For example, it may seem to a person that someone is standing in the corner of the room or feel someone’s hands on his throat. The average duration of a “waking nightmare” is usually 6–7 minutes.
According to scientists, such phenomena were once experienced by every fifth person in the world. Luckily, it’s not dangerous at all!
5. Each of us has experienced a hypnotic jerk.
This is also a unique state. If you once, when falling asleep, suddenly felt that you began to fall, this is a hypnotic jerk. That is, involuntary muscle contractions that occur at the time of falling asleep.
These movements can be both soft, that a person does not even notice them, or quite strong, which can wake him up.
Did you know?
For most people, fatigue reaches its peak at two in the morning and two in the afternoon. That’s why after dinner you lose your guard and feel exhausted.
6. People become sleepwalkers 1–2 hours after falling asleep
And this happens during the deepest stage of sleep. While walking in a dream, “sensory perception” is practically turned off, which means that a person is not fully aware of reality, smells, sounds, and even pain.
He can not only walk around the room, but also get behind the wheel of a car and drive around the city, clean the house or paint the walls. There are even cases of violence during somnambulism.
The next morning, a person, as a rule, does not remember his nightly adventures.
7. Lucid dreaming is not a myth!
During lucid dreams, a person is fully aware that this is a dream and can take control of the plot of the dream, dictate what will happen next. This is very useful if a person, for example, suffers from nightmares and has the same dream every day. So he can replay a conflict situation or change the course of sleep, making an unexpected turn.
According to scientists, 55% of people have experienced lucid dreams at least once in their lives. Many people specifically learn to manage their dreams.
Did you know?
Waking up for 16 consecutive hours reduces your performance as much as if your blood alcohol level were 0.05%.
8. You get taller when you sleep.
During the day, due to the load on the spine, the vertebrae are compressed, as a result of which fluid partially flows out of the intervertebral discs. This leads to the fact that a person by the end of the day becomes actually 1 centimeter lower.
And when a person sleeps, the load on the back decreases, the fluid returns to the articular joints, thereby allowing the body to “stretch”, that is, to regain that same centimeter.
By the way, this is one of the reasons why children and teenagers grow up in sleep, there is no pressure on the spine. Another reason is that more growth hormone is produced during sleep.
9. There are people who talk more often in their sleep.
And these are children and men. Usually a person has no idea that he is talking in his sleep until someone tells him about it. Scientists are convinced that the reason for talking in a dream is stress. This is how the psyche reacts to phenomena and situations with which a person fundamentally disagrees.
Did you know?
In the seventeenth century, it was perfectly normal to split a night’s sleep into two parts, using a 1–2 hour break for prayer, communication with relatives or reading books.
10. Recurring dreams call the brain to solve the problem
Sometimes people have recurring dreams, where the same story goes from one night to another. Psychologists believe that in this way the brain encourages a person to pay attention to what he misses, to solve some problem. As soon as a person does this, such dreams stop.
11. Some people leave their body in their sleep.
Or rather, they just think it is. Scientists call this a neuropsychological phenomenon. A person, being in a half-asleep or sleepy state, sees himself outside his body, that is, he watches himself from the side.
While scientists do not deny the existence of the out-of-body illusion, they cannot explain how or why it occurs. Believers explain this phenomenon as “walks of the soul.”
By the way!
The worst enemy of a good night’s rest today is round-the-clock Internet access. It is what prevents most of us from getting enough sleep.
12. Sometimes in dreams enlightenment comes
Probably everyone remembers from school that the Russian chemist Dmitry Mendeleev his table was dreamed of in a dream, but not everyone takes into account the background. The chemist was obsessed with creating a periodic system of elements, so he constantly thought about it, and one day he just saw her best incarnation. A similar story happened with the chemist August Kekulewho wanted to create the formula for benzene.
Scientists explain such moments by the games of the subconscious. He already knows the answer to the question, but has not yet had time to convey it to consciousness, so we are dreaming of the answer.
Strong and sweet dreams to you!
What Does the Sleeping Brain Say? Syntax and Semantics of Sleep Talking in Healthy Subjects and in Parasomnia Patients / Uguccioni AI, Gay F., et al // Sleep. - 2017