In winter, we all know that the weather is cold and dry, so many people will be afraid of cold at this time. This is also a normal situation, but at this time, we must try to avoid some undesired cold protection methods. So what are the heating methods we should be careful to avoid, let's take a look together.


Layer by layer


Many people choose to wear more clothes in the winter. I think this approach can make us warmer, but we must be careful. In fact, the clothes themselves do not produce heat, but just save the heat. No amount of wear can bring heat to the human body. Therefore, if the thickness of the air layer is more than 1.5 cm, the convection of the air will increase, the heat will be dissipated faster, and the heat retention will naturally decrease. Moreover, if you wear more clothes, the body's own body temperature regulation function will decrease, but it is easy to have a fever and cold, which is definitely not good for our health. Therefore, it is not recommended that everyone wear too much at this time, and moderate clothing is sufficient.


Close doors and windows


Many people have the habit of closing doors and windows to sleep in winter. This practice will indeed reduce air convection and increase indoor temperature, but the resulting air circulation is more harmful. If there is no way to circulate the air, it will easily bring negative effects to the human body at this time. First of all, the human body will produce more than 500 kinds of chemicals during the metabolism process, of which 149 kinds are discharged from the respiratory tract. As a result, the air will contain a large number of bacteria. , Viruses, carbon dioxide and dust particles, these substances do not have any benefit to our health, and have an impact on the respiratory tract, so those who sleep behind closed windows often suffer from colds, coughs, and pharyngitis.


After all, the weather is very cold in winter, so we must pay attention to keeping warm in time. If we have been affected by the cold at this time, it will naturally lead to a decline in physical fitness. There will be certain taboos. We must be careful to avoid these wrong practices in order to be healthy.