Does the cold wave hit, are fat people colder or thinner people colder?

　　A century-long cold wave has hit, scaring even my southern region into snow. Kids in the south don't need their mothers to remind them to put on thermal leggings. Fat people envied the thin ones for showing off their skin in the summer. But with the arrival of the severe cold wave, the thin ones started envying the fat ones for their multiple layers of insulating fat. Is the truth really what people think—that fat people don't get cold?

　　Do fat people really tolerate cold better than thin people?

　　Actually, regardless of weight, people can't handle extreme cold or heat. We know that both extremely low or high body temperature can affect body functions. For every degree the body temperature drops, the immune system weakens by over 30%. Immunity is the "shield" that protects human health. Once the immune system weakens, diseases like colds, pneumonia, bronchitis, rheumatism, and ulcerative colitis can appear. High body temperature can also cause various discomforts. Many people have experienced the feeling of having a high fever.

　　To avoid extreme high or low body temperature, the human body uses a thermoregulation system to maintain a dynamic balance between heat production and dissipation to keep the body temperature within a certain range. For example, when it's hot in summer, the body cools down through sweating. In winter, the body stores fat to "insulate." Fat tissue has a buffering and insulating effect and can be burned for heat. As a calm and theoretical person, I have to admit some of the reasons why people think fat people don't get cold. The fat layer can insulate, which for fat people is like wearing a thick cotton coat, making their ability to resist cold better than thin people.

　　So, do fat people not get cold while thin people do? NO, NO, NO. In the dead of winter, if you look at very fat people, you'll see that sometimes they shake more than average people.

　　Why do fat people with a "thick cotton coat" still fear cold?

　　Most fat people eat a lot but move little. They have a lot of body fat but not much muscle. Muscle has a rich blood supply, with each muscle having its own blood supply. With low muscle content, blood supply is also affected, which hinders the transmission of heat in the body. When it's cold outside, fat people still feel cold. Some fat people with little muscle are even colder than thin people. This is because fat cells have fewer mitochondria than muscle cells! Here, let me explain mitochondria for you. Mitochondria are the main sites of aerobic respiration in cells and the structures that produce energy in cells. They are like a "lighter." Carbohydrates, fats, and proteins, the three energy-providing nutrients, are like the "fuel" in the lighter. Fat people have plenty of fat, meaning "fuel" is sufficient, but they have fewer mitochondria in their fat compared to muscle. Therefore, during heat production, fat people lack the "lighter." With fuel but no lighter, the fire can't be lit, and enough heat cannot be generated to keep them warm.

　　On the other hand, thin people with abundant muscle mass have strong metabolic abilities. The "fuel" stored in their bodies can be fully burned, giving them strong cold resistance. The most representative group is fitness instructors. When we are shivering in winter clothes, we can see fitness instructors still wearing autumn or even summer clothes, "hmming and hahing" while exercising.

　　As a slightly chubby and micro-fat girl, I seriously tell you that we fat people fear cold and don't dare to wear too much because it swells! During the severe cold wave, I didn't dare to wear too much either—just a sweater and an outer jacket. I was so cold that I almost shook my marrow apart... Do you know? When I saw my slim friend wearing two pairs of cotton pants, two outer jackets, and a sweater still looking slimmer than me, my heart was in pieces! I have to say it again, whether you fear cold or not has nothing to do with being fat or thin! Whether one fears cold depends on their heat production and insulation abilities. Fat people are also afraid of cold.

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