Due to the need to prevent and control the “epidemic” epidemic, many places such as hospitals, supermarkets and communities have to measure the temperature of people going in and out. Once someone’s body temperature exceeds 37.0℃, I or the person taking the temperature is very nervous and anxious. I hope their temperature can be lower, lower! In fact, the lower the temperature, the better! We know the normal value of body temperature: oral sublingual temperature is 36.3 to 37.2 ℃, rectal temperature 36.5 to 37.7 ℃, axillary temperature 36.0 ℃ to 37.0 ℃. The ideal body temperature of the human body is 36.5 to 36.8 degrees. In particular, 36.5 degrees can be said to be a watershed, below this temperature, the hidden danger of damage to health has always existed, above this temperature, your health is basically no major problems. Studies have shown that for every 1°C decrease in body temperature, immunity will drop by more than 30%; for every 1°C increase in body temperature, immunity will increase by 5 to 6 times, and bats maintain a body temperature above 40°C, so its immunity is hundreds of times higher than that of humans, so bats carry viruses such as New Coronary Pneumonia without causing disease, but can cause disease in humans. We know that the lower the body temperature, the lower the basal metabolic rate, the slower the blood flow, the slower the efficiency and speed of white blood cells to kill the “enemy”, but also more likely to cause the body infected with viruses and bacteria, causing disease. White blood cells not only defend against external viruses and bacteria, but also monitor cancer cells in the body and kill them in time. Even a healthy person produces about 5,000 cancer cells in the body every day. If one of them escapes the surveillance of the immune system and survives, it will soon become 1 to 2, 2 to 4, 4 to 8 …… Eventually evolve into a tumor …… What causes the body temperature to drop? 1. The main reason – lack of exercise. With the improvement of living standards and the rapid development of industrialization, people gradually turn from mainly engaging in field labor to industrial workers, and from those who mainly engage in physical labor to those who mainly engage in mental labor, resulting in a relative lack of exercise. The reduction of exercise leads to fat increase, muscle atrophy and muscle proportion decrease. 2, enjoy the “cool” thermoregulatory center is no longer sensitive: enjoy air conditioning, cold drinks and other pleasant at the same time, your thermoregulatory center will no longer be sensitive to the external temperature, resulting in lower body temperature, immunity and other decreases. Why is low body temperature harmful to the human body? 1, the harm to the heart: every 0.5 ℃ lower body temperature, the heart pumping blood than people with normal body temperature at least 10 times more per minute, 600 times more in an hour, 14,400 times more in 24 hours, 5,256,000 times a year, 10 years than the normal body temperature of 525,600,000 times more. The heart will become more and more tired, resulting in an overburdened heart. 2. Lower body temperature leads to slower blood flow, slower supply of nutrients to the coronary arteries, and lack of power for the heart to beat, leading to various heart diseases, such as chest pain, shortness of breath, weakness, palpitations (often suggesting a slowed, increased or irregular heartbeat), dizziness, fainting and other phenomena. At the same time, the blood runs slowly, and the toxins metabolized by the heart cells are not easily discharged, which also easily leads to various heart diseases. 2, the harm to the brain: low body temperature, blood running slower, insufficient blood supply and oxygen to the brain, dizziness, memory loss, poor sleep in the lighter cases; cerebral ischemia, cerebral infarction in the heavier cases. 3, the harm to the liver: low body temperature, resulting in insufficient blood in the liver, fat and toxins accumulate in the liver, resulting in fatty liver or cirrhosis, and bile is also secreted by the liver, the liver function is weakened, bile secretion disorder, which in turn affects digestion. 4, the harm to the kidneys if the kidneys are in a long-term state of hypothermia, will seriously affect the normal physiological function of the kidneys. Delayed excretion of metabolic wastes of the body, resulting in more than 100 kinds of metabolic wastes such as urea nitrogen, creatinine, uric acid and toxic accumulation, resulting in various kidney diseases, which may seriously lead to uremia. 5, the harm to the immune system Immune cells will only work diligently when the body temperature is around 36.8 ℃, otherwise it will be invasive to the body of viruses and bacteria “blind”, let it drive straight in. According to scientific statistics, every 0.5 degrees drop in body temperature, the immune function will drop 30% to 40%. 6.Other hazards: obesity, edema, mental discomfort, infertility, post-operative infection, cancer, etc. Ways to improve body temperature Strengthen exercise, especially gentle aerobic exercise, such as taijiquan, eight duanjin, etc., step by step, gradually improve the amount of exercise; improve the diet structure, improve nutrition, reduce the intake and absorption of weight loss. It is true that you can increase the body’s basal metabolic rate and raise the basal body temperature. But “freezing three feet, not a day’s cold”, exercise, nutrition need to be long-term persistence. Heat preservation and sun protection: wear a hat in winter, soak your feet and take a hot bath every day, drink hot water instead of cold water.