Chapter 58 58．Is cold-blooded really ruthless?

Q has always been spherical We often use "cold-blooded animals" to describe those ruthless people.Want to know, is everyone's blood temperature the same?If there is a difference, will people with colder blood temperature have a similar tendency to be calmer, more rational, and more ruthless in personality? A round A is always spherical I am cold, but I am gentle. Describing a person as cold-blooded is a metaphorical rhetorical way. "Cold-blooded" represents a "cold-blooded animal" and has nothing to do with the temperature of a person's own blood.Mr. Qian Zhongshu's description in it: "Mr. Li was originally like a cold-blooded animal in Dongzhe, but he was complimented by Mr. Gu in public, so that he was full of spring energy and wriggled to live." Most of the "cold-blooded animals in Dongzhe" described in the original text are snakes such animals.Firstly, snakes look ugly, secondly, if poisonous snakes bite people, they will be fatal, thirdly, their whereabouts are hidden and their movements are fast, so it is inevitable to bring people a feeling of ruthlessness. this.Humans are warm-blooded animals, also known as warm-blooded animals.Our body temperature does not change with the temperature of the external environment, it always remains constant.Most birds and mammals fall into this category.In contrast, cold-blooded animals are also called temperature-changing animals. As the name suggests, their body temperature changes with the outside temperature.Therefore, cold-blooded animals are not necessarily cold-blooded, and their blood temperature is related to the environment.If the ambient temperature is high, their body temperature and blood temperature can be higher than that of warm-blooded animals.

The range of human blood temperature is about 33°C to 38°C, and its level is closely related to the level of body temperature.The higher the blood temperature, the higher the body temperature.There will be differences in blood temperature between people, not only that, for the same person, his blood temperature is constantly changing.The temperature is different during the day and night, and the temperature is different when sleeping and waking up. Even when girls are "big aunts", the temperature will be different from usual.So does the temperature of the blood have anything to do with a person's personality? Will people who are "cold-blooded" be more ruthless?

Hundreds of years ago, the philosopher Kant tried to use the characteristics of blood to explain the differences in human temperament.He believes that people with different personalities have different blood traits.For example, he believed that the blood temperature of choleric people is higher, while that of phlegmatic people is lower.Of course, this is just his conjecture, without any basis. However, scientists conducted experiments and found that the relationship between human personality and body temperature is very complicated and confusing, and it is not a simple relationship such as "cold-blooded" and ruthless.For example, some studies have found that introverts may have a slightly higher body temperature in the morning and a lower body temperature in the evening, and the opposite is true for extroverts.Other studies, however, found no association.Therefore, for different people, there is no particularly obvious relationship between personality and body temperature.But another interesting phenomenon is that we will feel "warm" in our hearts after accepting help from others, but we will feel "cold" if we are rejected.In fact, scientists conducted experiments and found that human social feelings can affect the estimation of environmental temperature, that is to say, human social feelings and temperature are also inseparable.In another experiment, people's sense of trust will increase when the temperature is higher.Scientists speculate that this may be related to the activity of the "insula" (insula) in the brain.Therefore, describing a person's coldness is actually related to the feeling he brings to people, and has nothing to do with whether the person's blood is cold or not.

Other studies have shown that for mammals, the lower the body temperature, the longer the lifespan.It seems that "cold-blooded" is not bad at all!