Scientific facts about sleep that will surprise you

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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.

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.

Fact!

​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.

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.

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

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!

ai generated, nature, woman
realism, odalisque, woman
child, baby, cute
ai generated, woman, bed
bed, bedroom, room

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

By Yraa

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