What are the advantages and disadvantages of being left-handed?

Left-handed people have stronger spatial awareness and thinking ability in images.

The right brain has the ability to recognize space and images, that is, the ability to think in images, which makes the right brain at the forefront of the brain's perception of the world and its perception ability is stronger. As a physicist, Einstein seems to have a well-developed left hemisphere. However, through in-depth study, he found that he could not pass French at school. On the contrary, his hobbies are playing the violin, drawing, sailing and imagining games. Einstein attributed many of his scientific ideas to his imaginary right brain activity. It is said that one summer, he fell asleep on a hill, dreaming that he rode a light beam to the distant extreme of the universe and found himself "illogically" returning to the surface of the sun. He suddenly realized that the universe was originally curved and the knowledge of "logic" he had learned before was incomplete. Einstein transformed this picture into language, and the numbers, formulas and words written down became "relativity".

Being left-handed has both advantages and disadvantages.

For a long time, people have a prejudice against left-handers, thinking that they are not as good as right-handers. Many left-handers always think that they have been discriminated against. In fact, left-handed people do have some difficulties in life, because most of the electrical appliances are designed for right-handed people, and almost all kinds of facilities in life are prepared for right-handed people, which often brings a lot of inconvenience to left-handed people.

Modern medical research has proved that left-handed people are prone to emotional frustration, fear, depression, schizophrenia and other diseases, such as diabetes, ulcerative colitis, rheumatoid arthritis, myasthenia gravis and so on. Because the right hemisphere of the brain is dominant, and the right hemisphere of the brain focuses on emotion, intuition and art, antipsychotics, antihistamines and sedatives can easily cause EEG changes. Reading aloud is easy and difficult. Some people pointed out through research that the suicide attempt of left-handed people is three times higher than that of ordinary people, and their life expectancy seems to be shorter than that of right-handed people, which is easy to cause casualties. Some scholars have done research on this. Among the 189 college students surveyed, various injuries were found, and the incidence of left-handed and right-handed students was different:

-In sports injuries, left-handed people are 20% higher than right-handed people;

-Left-handed people are about 25% more likely to be injured due to work or labor than right-handed people;

-Family accidents, left-handed people are 49% higher than right-handed;

-The incidence of injuries caused by improper tool operation is 5% higher for left-handed people than for right-handed people;

Left-handed people have 85% more accidents than right-handed people.

Although left-handed people have many shortcomings, they also have their own advantages. The division of labor between left brain and right brain is not absolutely isolated. Generally speaking, the more developed the logical area of the left brain, the more developed the intuitive area (or artistic area) of the right brain. Left-handed people have the ability to give full play to two areas of the brain, so they are superior in many fields. Chaplin, a famous American humorous film artist, and Picasso, a famous French painting master, are both left-handed. There are also many historical celebrities who are left-handed, such as Alexander the Great, Charlemagne and Napoleon. Left-handed athletes also show their talents in the sports field. In the history of baseball, the best pitcher, who can hit the ball with both left and right shots, accounts for 1/2. Left-handers are outstanding in tennis, badminton, table tennis and basketball. Left-handed people can take advantage of the "nerve short circuit" in the right brain to attack each other quickly and win by surprise in antagonistic sports that require high nerve response. Especially in the field of mathematics, left-handed people are more noticeable. Researchers at Hopkins University in the United States found that children with mathematical talent are almost twice as left-handed as right-handed.

Left-handed people are more agile

Left-handed agility has become a permanent topic in sports. Generally speaking, for sports that don't need face-to-face fighting, such as swimming, track and field, shooting, etc. The proportion of left-handed athletes is not high compared with their proportion in the population. However, for those face-to-face fighting events that bring players closer in the competition, such as fencing, table tennis and basketball, the proportion of left-handed athletes in the population is much higher than that of left-handed athletes. In fencing, the most typical fighting event, between 1979 and 1993, half of the male players reached the quarterfinals of the World Championships, and one third of the female players were left-handed. The title picture is a photo of our national fencing team training. Table tennis has been dominated by lefties for many years, and tennis has been dominated by lefties for a long time. The NBA professional basketball game in the United States is also particularly prominent.

One explanation is that the left hand is commanded by the right brain, which is responsible for sensing space and sensing functions, which makes it easier for left-handed people to exert their visual and spatial sensing functions, and to shoot faster, more accurately and more ruthlessly. From the speed of nerve transmission, from "seeing" to "moving", right-handed people take the route of "right hemisphere-left hemisphere-right hand", while left-handed people take the route of "right hemisphere-left hand". It can be seen that left-handed people took a shortcut in the process of nerve transmission. The speed at which the brain transmits information to the left side of the body through the central nervous system is fifteen thousandths of a second faster than that to the right side, which makes left-handed people move faster.