"Spring breeze is sometimes good, spring breeze is sometimes evil, spring breeze can't open flowers, and flowers are blown down by the wind." This poem by Wang Anshi in Song Dynasty vividly depicts the climate characteristics in early spring. Spring is the first of the four seasons, the beginning of Vientiane renewal and an important starting point of health care. 1, climate change is easy to aggravate the disease. Spring is warm and cold, which is the season with the biggest temperature change, the most unstable temperature and windy weather. Especially in the early spring, sometimes the weather is fine and the spring is bright, which makes people put on winter clothes and light clothes. Sometimes when the cold wind blows, you still have to wear cotton-padded clothes and wrap your skirt tightly. If you are not careful, you will catch a cold and get sick. The rain is still hitting the south window today, and the north wind may roar tomorrow; It's still warm at noon in spring, but suddenly it's cold at night. Under the influence of low temperature in winter and early spring, human skin sweat glands contract to reduce the heat loss in the body and keep the body temperature constant. In spring, the temperature rises, the skin pores stretch, and the blood supply increases, but the oxygen supplied to the brain decreases accordingly, which affects the work of the brain and easily causes "spring sleep". Coupled with the impermanence of cold and hot weather, the condition of patients with coronary heart disease will often worsen or worsen, and patients with rheumatic heart disease will relapse or aggravate due to cold, humidity, overwork, upper respiratory tract infection and other reasons. At the same time, the changeable temperature, air pressure and temperature in spring make people's mood change a lot, and they are prone to depression, depression and bewilderment. Especially people with a history of schizophrenia are most sensitive to this weather and prone to relapse. Therefore, there is a folk saying that "spring is coming, stupid." 2. Order based on atmosphere. Traditional Chinese medicine believes that the climate in spring is characterized by "taking ethos as the main order", that is, "catching a cold". And "cold" can be used as a pathogenic factor alone, and often combined with other pathogenic factors as a disease. One is to hurt the upper body. Such as headache, stuffy nose, runny nose, itchy throat and other symptoms common in colds. Second, the lesions are extensive. Because of the uncertainty of the common cold, it often goes up and down, and it can stay in the fur or muscles or wander in the meridians. Up to the forehead, down to the waist, knees, tibia and fibula. The third is "the wind wins and moves." Such as convulsions, spasms, tremors, peristalsis, and even the inversion of the horn arch and neck rigidity, are often related to wind and classified as wind diseases. Fourth, miscellaneous diseases. The common cold is often combined with other pathogens and invades the human body. For example, in the long summer, the common cold often invades the spleen together with damp pathogen, showing symptoms such as indigestion, abdominal distension and diarrhea. If it is combined with heat, it is wind-heat, and if it is combined with cold, it is wind-cold, which is often referred to as wind-heat exogenous pathogen, wind-cold exogenous pathogen and rheumatic arthralgia. At the same time, violent winds often seriously reduce the "vitamins" in the air-negative oxygen ions, leading to changes in chemical processes for people who are sensitive to weather changes. If a large amount of serotonin is secreted in the blood, it will make people feel nervous, depressed and tired, and it will also cause some people to have an overweight thyroid gland. Therefore, Huangdi Neijing said: "Wind is the beginning of all diseases." Fifth, the wind blows over the liver. The atmosphere in nature has the greatest relationship with the liver. The common cold belongs to yang evil, which is most likely to damage people's liver, especially to consume people's liver yin (leading to liver yin deficiency), with symptoms such as dizziness, dry eyes, burning pain in flank, hand and foot peristalsis, red tongue and little body fluid, weak pulse and so on. The common cold can even disturb the liver yang, leading to liver wind and even stroke. Therefore, the most important thing for spring health preservation is to "nourish the liver and calm the wind". 3, the human immune function is low. The sudden change of temperature in spring makes people's immune and defense functions decline. This kind of abnormal weather, such as impermanence of temperature, sudden drop of temperature or sudden rise of air pressure, is also easy to cause sympathetic nerve disorder, causing capillary contraction, high blood pressure and increased blood viscosity, which is easy to induce stroke, angina pectoris and myocardial infarction. Especially in early spring, various physiological functions in the human body are being adjusted, and the functions of various systems have not fully adapted to the climate change. The body's disease resistance is relatively low and it is easy to be infected with various diseases. In addition, spring is the off-season of vegetables and fruits, which often leads to insufficient vitamin intake, so that many people have symptoms such as mouth sores, swollen roots, bleeding gums and constipation. In addition, in spring, the metabolism of human body is vigorous, the appetite is enhanced, the secretion of gastric juice such as gastric acid is increased, and emotional instability can easily lead to autonomic nerve dysfunction and recurrence of diseases such as gastric ulcer. 4. Various pathogens have increased. When spring returns to the earth, some pathogens harmful to human body, such as microorganisms, bacteria and viruses, will also take advantage of it. The rampant diseases and insect pests have brought great disasters to people, especially in southern China. Bloom is warm in spring, with many flowers and windy winds. There are all kinds of pollen grains, catkins, dust, dust mites and fungi floating in the air, so people with allergic constitution are most likely to induce allergic reactions, causing allergic dermatitis, allergic rhinitis, asthma and urticaria. At the same time, due to the change of time and qi, human endocrine changes in spring, which is easy to induce bleeding diseases such as nosebleeds and even lead to cerebral hemorrhage. In addition, spring is also the season of high incidence of tuberculosis and hepatitis A, so attention should be paid to prevention and conditioning. 5, the human body is sparse. When the yang in nature begins to grow, the yang in the human body also conforms to nature and spreads outward. First, qi and blood activities have been strengthened. Human qi and blood run smoothly in hot days, but stagnate in cold days. The climate in spring is between hot summer and cold winter, and the climate is mild, so the activity of qi and blood is also between the two seasons, that is, it is gradually increasing. At the same time, yang represents the ability of human metabolism, and the growth of yang means that human metabolism begins to flourish. Second, the liver qi began to flourish. Su Wenjin Kui Yan Zhen clearly puts forward that "the five internal organs correspond to the four seasons", specifically in spring, that is, "the liver ... has less yang in the middle and less qi in the spring". There is also a record in Huangdi Neijing that "the liver governs spring", which means that the human liver corresponds to spring, and its function is most vigorous in spring. Specifically, the function of the liver to control blood storage and discharge is gradually strengthened, and the blood stored in the liver flows to the limbs. Excessive liver qi affects the spleen, so it is easy to be weak in the spleen and stomach in spring. Third, mental activities are gradually active. With the warming of the climate and the increase of outdoor activities, people's spiritual activities have also begun to become active. These physiological changes put forward new requirements for spring diet.