Recently, it has cooled down, and many parts of the country have entered winter overnight!
I saw that the minimum temperature in Hefei was 5 degrees, while Beijing had already broken through 0 degrees and began to snow.
Some northerners came to the south and said that this is called cold:
Especially sleeping at night, where is the warm quilt, it is simply drilling into an ice cave.
<h1 class="pgc-h-arrow-right" data-track="9" > so, is it cold in the south or cold in the north? </h1>
First of all, the feeling of cold, the temperature difference between the skin and the outside world, there is another important factor - heat dissipation efficiency. The comfort temperature of the human body, air and water is different.
The human core body temperature is about 37 °C. However, if the temperature reaches 37 ° C, it will feel very hot, why is this?
Because comfort air temperature: 21 °C -28 °C
The body temperature is measured at 37 ° C, whether it is the mouth meter or the axillary meter, the core body temperature is measured. The human body is constantly dissipating heat, so the temperature on the surface of the body will be much lower than the core body temperature.
The surface comfort temperature of the body is generally between 21 ° C and 28 ° C, which is why we often adjust the temperature of the air conditioner, and the comfort temperature of this body feeling is also related to the metabolic rate of each person. Generally speaking, fat people will be afraid of heat, and thin people will be afraid of cold.
Some people even use the habitual air conditioning temperature as the standard for choosing a mate. (How much °C will the air conditioner in your house turn on in the summer?) Welcome to leave a message at the end of this article).
The super heat dissipation efficiency of the water will quickly take away the body temperature, so in the pool of 21 ° C water, we will feel very cold. It takes almost 28-33 ° C to feel acceptable.
Bathing above 37°C will make you feel comfortable. However, when taking a shower, the flowing water dissipates heat faster, and the water temperature needs to be above 40 ° C to not feel cold.
See here, I believe you have understood, when the temperature is the same, cold or not, the key to see - heat dissipation efficiency.
The humid and cold air in the south has a large moisture content and high heat dissipation efficiency. The heat emitted by the body is quickly transmitted to the air and dissipated, and the effect of wearing more clothes is not obvious.
Dry air is a bad conductor of heat, and even if you don't wear a lot in the winter in the north, it is enough to ensure that the heat emitted by the body can maintain the temperature, but the part exposed to the air is colder than in the south.
In the case of the same temperature, it must be cold in the south. The 5 °C of wet and cold in the south will be cooled over the dry 0 °C in the north.
<h1 class="pgc-h-arrow-right" data-track="34" > cold or not, depending on the indoor temperature! </h1>
The problem is that the south is generally the lowest 0 °C, and the north may give you a minus 20 °C.
At this time, the temperature difference is 20 ° C, you can not just look at the humidity, nor can you look at the temperature.
People spend more time indoors, and what they look at is the indoor temperature.
In the north, the warm equipment is perfect, as long as the time for outdoor activities is reduced, it will not feel cold. In the south, although the outdoor temperature is not low, the indoor temperature is low, which will cause the feeling of going home is not warm at all.
Home as a warm harbor, home is not warm at all, it is really chilling...
Also the problem with the thermal equipment!
In 2008, there was heavy snow in the south. Traffic was paralyzed, water and electricity were cut off, and the prime minister went south to guide disaster relief.
However, such snow, occurring in the north, will have no impact at all. Because, whether it is personal gloves, hats, masks, boots, down jackets, a full set of cold protection equipment, northern families are always available.
Many families in the south do not even have gloves, masks, and only wear a windbreaker when it is coldest, how can it not be cold?
Ethnic genes?
Also in the south, also in the north, the same fat and thin, the same age, why are some people afraid of cold, some people are not afraid of cold?
In fact, people's ability to resist cold is of course related to genes.
Current studies have shown that the gene that determines a person's ability to resist cold is called UCP1. The UCP1 gene on human chromosome 4 is the most important molecule to complete the non-trembling thermogenicity of the human body.
This protein, which is located in the body membrane of fat cell mitochondria, does not require any exercise and brain regulation intervention to directly convert the "fat" in your body into heat energy, helping you maintain a normal body temperature.
There are even studies, according to genes, to analyze the "cold resistance" of different regional races. Although the north is more frost-resistant than the south, there are also some cities in the north that have insufficient cold resistance, such as Hebei; and Guangdong in the south is actually a province that is not afraid of cold!
Where exactly is it cold? As a Hefei person who has no heating in the north-south junction area between Jianghuai and Huaijiang; I want to tell the southerners that there are almost no people who go out in winter and don't wear autumn pants; I want to tell the northerners who have been heated that as long as we are not completely unable to bear it at night in winter, we dare not get up and go to the toilet.