In the harsh winter, some people have put on heavy clothes in advance, but they still feel cold hands and feet; Others show great resistance to the cold and are not afraid of the cold.
Why are different peopleIs there a difference in cold perception?
People who are afraid of cold and people who are resistant to coldWhat is the difference in physique?
In fact, human cold tolerance is closely related to factors such as genes, subcutaneous fat thickness, muscle mass, body size and gender.
Fat is mainly distributed under the skin and is the main way for the human body to store heat, which has a thermal insulation effect. However, fat does not produce heat on its own, so it only acts as a warmer and does not provide heat. Fat is as thick as the walls of a room, and it can only block the cold from the outside, but it cannot generate heat on its own.
It's the muscles that really produce heat, and the blood flow is rich in capillaries and fibers that deliver heat to the muscles. As a result, the temperature is naturally higher in the areas where blood circulates faster. This also explains why the hands and feet that are furthest from the heart are often the first to feel cold. In other words, people's tolerance to cold has little to do with the amount of fat, the key is the amount of muscle. People with more muscles are more resistant to cold.
People who are resistant to cold are usually more muscular. The National Cancer Institute has found that when muscles contract, they release heat, which accounts for about 85% of the body's total calories, and helps maintain body temperature. It can be seen from this that whether a person is cold resistant or not, has little to do with the body fat and thin, the key lies in the amount of muscle content, more muscles are cold resistant, less muscles are not cold resistant. People who have healthy and adequate muscles generally have healthier bodies.
In addition, lifestyle habits and illnesses can also lead to a decrease in people's ability to perceive the cold. For example, people with an underactive thyroid will have less heat in their bodies; People with anemia are more sensitive to chills because of the lack of oxygen carried by hemoglobin; Factors such as lack of exercise, wearing too tight clothing, and a lack of staple foods and meat in the diet can make people more sensitive to colds.
People who are afraid of cold have these habits
Not athletic
Traditional Chinese medicine believes that "stillness is yin, and movement is yang". Relevant studies have also confirmed that muscle contraction during exercise can produce more calories, and regular exercise can promote blood circulation, increase body heat, and alleviate cold intolerance symptoms.
Clothing is too tight
When the weather is cold, many people will wear autumn clothes, autumn pants, over-the-knee socks, etc. to keep warm, and some people will even deliberately buy small sizes, thinking that the closer the body, the stronger the warmth performance. However, wearing clothes too tightly will lead to poor blood circulation at the end of the body, and cold hands and feet will be easier to find, and it may even induce chilblains if you are not careful!
Eat cold foods
From the perspective of traditional Chinese medicine, eating cold foods such as watermelon, mung beans, and ice cream after entering autumn and winter will weaken the yang energy in the body, leading to yang deficiency, and thus a series of cold symptoms are also prone to occur.
Excessive dieting
The body's heat energy needs to be converted by energy, and food is the main source of energy. If you simply rely on not eating, eating less, or only eating vegetarian dishes to lose weight, the way is not scientific, then the body's energy intake is likely to be insufficient, resulting in not being able to produce enough calories to resist the cold.
Neglect to keep warm
There are many reasons why you are always more afraid of cold than others, and it is related to not paying attention to keeping warm. When the weather changes, it is necessary to increase or decrease clothing, reduce the temperature and wear thick clothes, so as to wrap the body more tightly, so as to avoid the invasion of cold, choose the right clothes, and naturally warm the whole body.
Be careful if you suddenly feel cold
1.Hypothyroidism:
As the main endocrine hormone of the human body, thyroid hormone is mainly responsible for promoting metabolism and thermogenesis. When hypothyroidism leads to low thyroid hormone levels, the body is prone to chills. In addition, symptoms such as weight gain, general edema, loss of energy, and loss of appetite may occur.
2.Iron deficiency anemia:
Blood carries heat throughout the body. Patients with iron deficiency anemia may show more pronounced chills, especially in the hands and feet. This condition can also be accompanied by symptoms such as dry hair, loss of hair volume, dryness, palpitation, and shortness of breath.
3.Arteriosclerosis of the lower extremities:
Arteriosclerosis of the lower extremities is mainly manifested by chills and chills in the legs and feet. Severe ischemia in the lower extremities is caused by narrowing or occlusion of the arteries that supply blood to the lower extremities, which can be more severe at the ends of the extremities. In addition, problems such as immobility, intermittent claudication, numbness, etc., may occur.
In addition, diabetic peripheral neuropathy, hypothalamic lesions, **too fast, etc. may also cause sudden cold intolerance.
Source: Life Times.
*: Jing'an, Shanghai.