So, how did kissing come about? There are roughly the following statements.
Instinct theory
Dr vogel, Ph.D., Psychology, Swiss Institute of Anatomy? Professor Harlem believes that all human survival instincts are higher than other animals. Mammals don't need to learn to react, and humans do. Such as sucking behavior in infancy. Dan from America? Kalinski found that birds also have the instinct to fill their mouths. As early as the primitive human period, people did not need bowls, chopsticks and spoons. Mothers use mouth-to-mouth methods to feed chewed food into their babies' mouths. In this process, it is necessary to cooperate with the pressure of the tongue and the movement of the mouth, which is very similar to the feeding method of birds. This instinctive maternal love evolution is the origin of kissing. According to this view, kissing can be explained as follows: Because people have the genetic "code" or "memory" of instinctive sucking practice in infancy, kissing can be said to be self-taught. Desmond. Miles explained this phenomenon: this method seems unsanitary today, but as an instinct to feed babies, human beings have maintained it for millions of years. This primitive instinct kissing is obviously the origin of modern human kissing.
Posture theory of human heritage
The so-called heritage refers to the customs left over from the previous generation. The sucking mode and mouth-to-mouth feeding mode involved in the "instinctive theory" of kissing have been used as an inheritance habit in the process of human reproduction. Many western experts and scholars who study human behavior generally believe that "the gesture of human heritage" is the origin of modern human kissing. Desmond. Myers believes that the sucking action of a baby is the most important gesture in human heritage, and the desire to kiss is actually "returning to the mother's arms".
First of all, the comfort of breastfeeding will leave a lasting impression on our minds. The mother lets the baby suck * * * in an intimate way, so that there is a warm and soft thing in the baby's mouth, from which a sweet and warm liquid can be sucked out, so that the baby's tongue tastes sweet and his lips feel soft, thus adding a basic comfort to his life-a primitive intimacy.
In the later adult life, people will be eager to restore this intimate relationship, and the original sucking behavior will appear in various disguised forms or angles. And it extends many oral comfort actions, the most typical of which is kissing.
In fact, for lovers immersed in lingering affection, the baby-like behavior pattern has not disappeared, but has degenerated into the mouth comfort and wonderful feeling obtained when sucking their mothers. It can be seen that this "recovery" performance of human intimate physical contact behavior shows that sucking posture is the origin of kissing. The origin of this kiss is the most acceptable to those who have experienced this feeling of "reply" on the spot.
Jealousy theory
According to legend, wine was invented in ancient Italy, but rarely. Women are forbidden to drink alcohol except the male host. Women who violate the ban will be severely punished together with their husbands. Therefore, men at that time were afraid to go out, for fear that their wives would be killed by drinking at home. So the first thing to do when you go out is to lean down and put your nose to your wife's mouth to smell if there is any lingering fragrance of stealing. Over time, this lip-smelling behavior developed into kissing.
Another legend is that when ancient men went out hunting, they instinctively feared that their wives would be taken away by others and they would drink and have fun together. So, as soon as the man got home, he put his tongue into the woman's mouth to detect the smell of wine and other suspicious foods. By the same token, in order to ensure innocence, a woman will automatically open her mouth when her husband comes in to let him smell it. In some countries in Europe and America, families have a ceremony in which husband and wife kiss each other when they go out and come back. It can be seen that this primitive custom has been passed down to this day and is enduring for a long time.
Body differentiation theory
In the "Drinking Articles" of Plato's Dialogue, Plato described his love philosophy through the mouth of drinkers. It also includes the philosophy of the origin of the kiss. Aristophanes, one of the drinkers, agrees with the theory of body differentiation, that is, love arises between divided bodies. Love each other, >>
Question 2: Why do people kiss? Mammals began to appear 200 million years ago. The most important action in their life is licking, from themselves to the group.
This is the age, motivation and predecessor of kissing, killing viruses with saliva and enhancing communication with saliva.
Through this behavior, mammals let bacteria destroy them through their own digestive system and produce antibodies through close contact with the digestive system. This antibody, etc. It is fed back in the form of saliva. To protect the mammals themselves.
From our daily life, we lick dogs, cats and mice all the time, and this situation has lasted for 200 million years! It is a kind of protection, a kind of communication and a kind of language for mammals. The dog licked his mother's mouth and said, "I'm hungry."
The ultimate point of licking is that mothers lick their children's feces and urine, and then produce milk with targeted nutrition and antibodies!
Saliva exchange between mammals has become an important link, and individual health is not as good as collective health! It is natural to lick each other. Exchange and being exchanged are the basic manifestations of mutual survival and trust.
But environment and evolution will also weaken, deform, degenerate or even disappear this behavior.
As human beings, before 6.5438 million years ago, the body hair basically degenerated, so the licking principle was also deformed, and kissing became the last form. Our close relatives, apes and monkeys, have left a little licking shadow after combing their fur.
In addition, we all know that if we draw a neurogram, our lips are an organ with a very large proportion. With our lips, we can not only exchange saliva, but also understand and be understood and remember each other. Exchange substances and release hormones. That's another topic.
People have to lick like cats, dogs and mice, and now they just keep kissing; Because of the cultural background of China people, this kind of behavior is even less. In fact, it is helpful to people's health!
what is love ? It is not only a feeling, but also an action. Kissing the motherland and hometown, kissing the wise and heroes, kissing the old, the weak and the sick are all manifestations of great love!
Kissing is not vulgar, only abused by vulgar people! Kissing can not only give people health, but also give people wisdom and courage!
Let the world be full of love, then let the world have more healthy kisses!
Question 3: Why is kissing comfortable? Because kissing is an affirmation of two lovers' feelings, according to ordinary people, it is helpful for protein to absorb and increase nutrition for his body, but it is not. After analysis, kissing has 36 muscles in motion, which can play a * * * role. I wonder if it is true!
Question 4: Why do people close their eyes when kissing? Why do people like to close their eyes when kissing or naturally? A scholar in Singapore gave an answer to this delicate question.
Professor Yao Cheming from the National Institute of Education of Nanyang Technological University in Singapore wrote in the Straits Times last weekend that "kissing will bring people emotional tension"; Closing your eyes when kissing is a natural way to reduce this tension.
Professor Yao also published a theory that when a person enters the process of kissing and closes his eyes, many images in his mind become blurred, but the image of the kissing object becomes obvious in his mind; This will be a wonderful feeling.
Finally, the professor also pointed out that some people think that closing their eyes when kissing can reduce the embarrassment caused by intimate contact and concentrate on feeling gentle touch and love; In short, they don't want to be disturbed.
Question 5: Why do couples kiss? The simplest answer is "this feeling makes me very comfortable". But this explanation is not sufficient. Some people have studied anatomy and the evolutionary history of kissing, calling themselves kissing experts. But so far, these scientists who study kissing have not explained clearly how people kiss, but they have put forward several theories to reveal how kissing affects our bodies.
An important question is whether kissing is acquired or an instinct. Some people say that it is a learning behavior, and our ancestors can kiss. At that time, the mother chewed up the food first and then sent it to the baby's mouth with her mouth. Even if the child has a broken tooth, the mother will still kiss the child's lips to show comfort.
There is a fact that not everyone can kiss, which supports the conclusion that kissing is acquired rather than instinct. Anthropologists say that tribes in many parts of the world don't actually kiss. Statistics show that 90% people kiss, while 10% people don't kiss at all.
Others believe that kissing is an instinct and take kissing-like behavior of animals as evidence. Most animals show their love for each other by rubbing their noses repeatedly, while other animals like to express their feelings with their mouths just like people. For example, bonobos exchange saliva to express their deep apologies. After the war, they all did this when comforting each other and developing social relations, and sometimes they kissed inexplicably like human beings.
Nowadays, the most recognized reason for human kissing is that it can help us find the right partner. When men and women's faces are close together, pheromones will convey biological information about whether they will have strong offspring. For example, women prefer men whose immune system protein genes are different from their own, which may give birth to offspring with stronger immune system and higher survival probability.
Most people are satisfied with the explanation that feeling good is the reason for human kissing. Human lips and tongue are covered with nerve endings, which can help human beings enhance the wonderful feeling of love when kissing. Although kissing is beautiful, it usually doesn't make us think about why we kiss, but it only makes us look for more ways to kiss.
So why do people kiss? Scientists have recently discovered that kissing can change the chemical composition of the body, rub the lips and exchange saliva, and change the oxytocin level released by the brain into the blood. This oxytocin is a hormone that can make people feel more intimate.
Interestingly, oxytocin is also released during childbirth, which is considered to be closely related to newborn babies and mothers. Scientists also found that in the kissing competition, women released less oxytocin, while male partners released more. Scientists don't know why there are such differences between men and women.
In addition to the changes in oxytocin levels, scientists also found that after kissing the beloved in the 15 minute kissing competition, the release of stress hormone cortisol-stress hormone-decreased, which will increase the happiness of lovers. Wendy Hale Hill, a professor of neuroscience at Lafayette College in Pennsylvania, said: "There are very few people who study kissing at present."
Helen Fisher, an anthropologist at Rutgers University in New Jersey, said that kissing can participate in any of the three main brain systems of mating and reproduction (* * *, romantic love and long-term attachment): "* * * inspires you to find a series of partners; Romantic love encourages you to concentrate your mating energy on only one person at a time; Attachment encourages you to stay in a relationship long enough for both men and women to spend their infancy together. "
By kissing, you can also smell whether the other person's teeth are healthy, what the other person likes to eat, and whether he smokes. Based on this, we can get to know a person and then decide whether we can continue to do other things with each other, such as having sex.
Question 6: Why does my boyfriend always touch my man's physical feelings when kissing? You can cooperate. But if you feel uncomfortable, tell the other person. If he feels uncomfortable, you can cooperate a little. It doesn't matter if he touches his chest once in a while. But if you want to kiss your chest, I don't think so. Otherwise, it will go further. You just have more control over it. Don't let yourself feel wronged. Don't make the other person feel uncomfortable. The two sides meet. After all, it doesn't matter, your love is developing. I wish people were too excited.
Question 7: Why does kissing feel so good? There are many researches on kissing, and there is even a special knowledge-"Kissing". People who study this subject believe that when kissing, the two sides will exchange a variety of hormones and pheromones, and the deep kiss between lovers is actually to judge whether each other's bodies are "chemically compatible" by contacting each other's chemical information. However, 66% of women and 59% of men believe that if they feel bad at the first kiss, they will definitely break up.
When kissing, the chemical hormones in the human body will change, and the level of cortisol, a hormone related to stress, will decrease; The secretion level of oxytocin, a hormone that enhances intimacy, will increase; Kissing also causes the brain to secrete endorphins, which can make people feel happy. Some people even calculated accurately that a sweet kiss is equivalent to eating 25 grams of chocolate. Moreover, men prefer "wet kisses" with their mouths open. In this way, they instinctively passed the androgen in saliva to women to arouse her desire.
People also like kissing, because it can test the feelings of both sides. Before and after kissing, couples usually look at each other affectionately for a short time, but if one of them is uncomfortable with their relationship, he can't stare at each other naturally, but will involuntarily look away or interrupt the other's gaze. Moreover, a series of small gestures when kissing are actually unconscious conversations-whoever has strong oral movements will be reluctant to open his mouth, and who just keeps his mouth open-all of which show their feelings about this relationship.
In addition, the skin of the lips is the thinnest in the whole body, and the surface is covered with nerve endings, which is sensitive. Moreover, in the process of kissing, not only the rarely used taste is greatly stimulated, but also the smell emitted by the other party is stronger than usual. By tasting the other person's unique taste and smell different from others, this person will leave a deep impression on you. These are the reasons why people like kissing.
Of course, kissing requires skill and practice. Many couples will find kissing boring at first, but as their feelings deepen, they can't stop.
Question 8: Why is kissing good for health? 30 points This is because:
1. It is scientifically proved that regular kissing can stabilize human cardiovascular activities, prevent hypertension, lower cholesterol and improve human health in an all-round way.
Second, the medical data of kissing:
1, tooth protection
Kissing is better than any brand of chewing gum, because it can prevent dental plaque and dental caries, and can prevent dental caries like toothpaste. The scientific reason for this is that when kissing, people can secrete a lot of saliva in their mouth, which contains a lot of calcium and phosphorus, which can protect teeth from decay and reduce the occurrence of gingivitis. In addition, saliva becomes neutral when kissing, which can prevent many dental diseases.
2. Beauty
Kissing your lover can beautify your face. A kiss needs to mobilize 30 facial muscles to make people's facial skin smoother and blood circulation faster. After kissing, the best effect is to wear skin cream and mask.
Step 3 lose weight
People don't have to go on a diet to lose weight to get the favor of the opposite sex. Although we only consume 65,438+02 calories per kiss, scientists claim that we can lose a whole pound of fat by kissing three times a day for at least 20 seconds each time.
4. Analgesia
The endorphin we often say is actually an anesthetic. The more you kiss, the more endorphins are secreted in saliva. A kiss can produce the same dose of hormones as painkillers. In addition, kissing can also make antibiotics. When kissing, people's saliva will secrete natural antibiotics, which also have the effect of anesthesia, so when you have unbearable pain in the future, don't take any painkillers, remember this dose of medicine-just kiss, kiss and kiss enough.
5. Pressure resistance
Kissing can prevent the formation of stress hormone adrenocortical hormone, which is the chief culprit of hypertension, high cholesterol, muscle weakness and insomnia. Usually kissing can effectively relax people's nervous system and make people get rid of stress. That's why people who like kissing are optimists. Kissing at least three times a day can keep you in a romantic and happy mood for 24 hours.
6. Immunization
There are many bacteria in our saliva. For all people, these bacteria are 80% the same, and 20% are unique to each individual. When two people kiss, their saliva will produce various microbial reactions, and this human immune system will produce some kind of antibody, which scientists call a cross immunotherapy.
7. Genetic compatibility analysis
This is no exaggeration! When you kiss, your brain will immediately make a chemical analysis of your couple's saliva and make a "judgment" on your genetic compatibility. So it's best to establish your genetic compatibility at the first kiss.
Therefore, kissing has many benefits to human body function. People who often kiss don't have to worry about stomach, bladder and blood infections. Guess what else kissing can do-it can cure hiccups.
Question 9: Why do men and women kiss? As a physiological reaction, kissing has many wonderful medical values. So don't be shy, tell your lover that you want to get as many kisses as possible because you want to be younger and healthier. Studies have found that kissing has the following benefits to the body:
1. Frequent kissing can make the cardiovascular system more stable and reduce high blood pressure and cholesterol. A kiss from your lover will make your heart beat faster, and the heartbeat frequency can be increased to about 100~ 140 times per minute. Smooth blood circulation can improve the level of oxygen supply in your body. Adrenal cortical hormone is also the chief culprit of hypertension, high cholesterol, muscle atrophy and insomnia. Kissing can prevent the formation of adrenal cortical hormone.
2. Adrenal cortical hormone is also a stress hormone. Because kissing can prevent the formation of adrenocortical hormones, kissing can effectively help you calm down from tension. People who like kissing are usually optimistic, which is also the reason. Kissing three times a day can keep you in a romantic and pleasant atmosphere for 24 hours.
3. A passionate kiss will make more than 30 muscles of the face tense, make the skin smoother, accelerate blood circulation, help improve facial muscle tissue and play a cosmetic role.
4. A gentle kiss can affect 2 19 muscles of the whole body, consuming 6.4 calories per minute on average, which is equivalent to swimming for 5 minutes. Medical experts estimate that kissing 1000 times a month can make you lose 500 grams. Scientists have announced that kissing three times a day for 20 seconds can help you lose weight.
The more you kiss, the more endorphins your body secretes. Endorphin hormone is a good anesthetic, and the hormone produced by kissing can achieve the effect of painkiller.
6. Kissing can secrete a lot of saliva, which contains calcium and phosphorus, effectively preventing dental caries. Kissers who are full of * * * are not prone to gingivitis. In addition, in the process of kissing, the pH of saliva is neutral, which can also prevent dental diseases. During kissing, saliva also automatically produces antibiotics.
7. Kissing can enhance immunity. Our saliva contains a lot of bacteria. Among them, 20% bacteria vary from person to person. Once other people's bacteria are added to the mouth of the kissing object, these microorganisms will react differently. Therefore, a person's immune system can produce specific antibodies.
8. People who kiss frequently are less likely to get sick in the stomach, bladder and blood system. Therefore, you should make full use of your convenience and sip your health on your lover's lips.
Question 10: Why do men and women kiss? Because kissing is an intoxicating way to express love. However, while enjoying the good times of interdependence, who would think of the dry chemical words 5- hydroxytryptamine, phenylethylamine and adenosine triphosphate? How many couples who are in love know that kissing is not only good for health, but also makes people more attractive?
The ancient Roman poet said, "Kissing is a meadow full of flowers in summer"; Shakespeare said, "Kissing is the mark of love". Sculptors like Rodin, painters like Klimt, and countless writers, poets, photographers and film directors have left immortal masterpieces for the world around the theme of kissing. Today, scientists also have something to say about kissing.
Double lip ignition chemical reaction
Kissing can make people's hormonal fire burn violently. What is the chemical secret? The scientific community began to pay attention to this problem about 30 years ago. In recent years, with the rapid development of biochemistry and neurophysiology, it has opened up new research fields-how emotions are generated, how feelings or memories stimulate feelings, how feelings affect our behavior, and so on. The researchers also found that desire and * * * are more the result of the interaction between hundreds of billions of nerve cells and thousands of transmission substances.
When the human body receives attractive kissing signals, the release of serotonin in the brain can make a person more relaxed and calm. Subsequently, phenyl ethylamine-phenylethylamine, like an arrow in the hand of the goddess of love, played a role in fanning the flames, making people feel * * * and ecstatic: the heart is pounding, the whole body is feverish, blood pressure is rising, sweating, saliva is increasing, and a heartfelt and thrilling feeling is full of body and mind. At this time, adenosine triphosphate, a cell fuel that has been greatly mobilized, provides the human body with the energy needed to speed up the heartbeat.
Gian, head of the Department of Neurology, University of Cagliari, Italy? Gessa explained: Before a couple's lips touch, the desire and expectation for contact begin to activate neurons in the brain. Entering the kissing stage, the sense of touch and smell strengthen the sex of neurons, and dopamine can make cells produce the neurotransmitter dopamine. When dopamine is released and diffused in the brain, a sense of pleasure arises spontaneously. This is why couples feel happy when they kiss. The same mechanism works when people taste chocolate, or when addicts "smoke a cigarette after a meal".
So, what profound influence will a affectionate kiss have? "In a good kiss, you will make a * * *, and your brain will be empty, because the blood accelerates in the blood vessels, reducing the blood supply to the head. You can't think at this time. " This passage is selected from the guide to love published by 1936, written by Hugh? Morris. If the two people kissing are congenial adult partners with good sexual and psychological qualities, then the effect of kissing is tantamount to a surge in amphetamine. Dopamine began to flow rapidly around the brain, the secretion of testosterone in both sexes increased, and adrenaline and norepinephrine were secreted by adrenal glands, which increased blood pressure and the heartbeat soared from 60 80 beats per minute to more than 100. The capillaries under the skin of the lips are congested, and the lips become red and swollen, which is very sexy (this is the reason why red lipstick is popular). In an unusually passionate kiss, the pituitary gland at the bottom of the brain secretes vasopressin. Scientists believe that this magical hormone can stimulate us to form a love relationship, and it can also help childbirth and women secrete milk.
That's what scientists say about kissing
Kissing seems simple, but it drives the activities of many tissues and organs of the body. "Compared with the movements of the upper and lower limbs, the accuracy of lip movements is unbelievable." Gus, director of plastic surgery at the University of London? Professor McGroot said. He studies how to correct oral defects by kissing. "This is good exercise. When you kiss, many muscles on your lips contract. The levator muscle vertically distributed in the lip lifts the lip and makes it protrude forward and outward. At the same time, the orbicularis oculi muscle is closed, which is distributed around the lips in a ring shape. These muscles coordinate their movements so that the lips can protrude and kiss. There is a transverse muscle inside each cheek, called buccal muscle, which is distributed from the mouth to the ears. When it tightens, it can control the position of the lips. "
Lucia, psychologist of Italian Clinical Society? Rosa? Cantafio explained: "Culture has a decisive influence on the meaning of kissing. In Europe, kissing marks the beginning of an emotional relationship. This is the prelude to the song of love and the continuation of sexual behavior ... >>