Young people like to play ball and run after catching a cold. After sweating, the symptoms of cold will indeed be alleviated. This is because when people are exercising, their sympathetic nerves are excited, their heart beats faster, their breathing is faster, the function of the defense system composed of white blood cells and antibodies in the body is improved, and the toxins in the body are discharged faster when sweating, so that the symptoms of colds are alleviated. This practice may not be a big problem for a few people who have strong physique, early colds and mild symptoms, but it is useless and even harmful for most people, especially children, the infirm and the elderly. Even young people sometimes cause serious complications such as myocarditis.

Cold is an acute upper respiratory disease caused by virus. In order to resist the invading virus, the human body should mobilize the internal defense system to fight against it, which is manifested in the increase of body temperature within a certain limit, the increase of white blood cells, the phagocytosis of cells, the production of antibodies and the enhancement of liver detoxification function. At the same time, the metabolism in the body is also accelerated, improving the body's disease resistance. At this time, it is very important to create favorable disease-resistant conditions for the body, and proper rest is an important one. If you take physical exercise such as playing ball and running after catching a cold, it will further increase your body's heat production and make your metabolism more vigorous, which will inevitably lead to an increase in body temperature, which will lead to abnormal body regulation and excessive excitement of the central nervous system. Excessive consumption of energy substances, sugar, fat and protein in the body will weaken the body's resistance, greatly increase the oxygen consumption, and increase the burden on the heart, lungs and other systems.

When a cold is complicated with bacterial infection, the pathogenic bacteria are mostly hemolytic streptococcus and a few are pneumococcus. If the patient does not rest and treat in time, it may cause sinusitis and bronchitis, rheumatism and nephritis. In the case of influenza caused by influenza virus, patients not only have common cold symptoms, but also have serious systemic symptoms, which may further lead to serious complications such as pneumonia and even secondary viral myocarditis.

It is worth noting that some acute infectious diseases, such as epidemic cerebrospinal meningitis, viral hepatitis, etc., can appear upper respiratory symptoms similar to colds at the initial stage of onset, and sometimes it is difficult to distinguish them from colds. If you get these diseases and exercise again, the consequences will be more serious. (Su Tong)