High blood pressure
Suddenly entering a cold environment from a hot environment will make our blood pressure rise, which is called "cold pressurization", and the symptom of "cold pressurization" is very obvious, that is, it will make our blood pressure rise about 20-30 mmHg in a short time.
xerophthalmia
Scientific research shows that if we stay in the air-conditioned room for a long time, the air-conditioned air will make our tears evaporate rapidly, and the long-term reduction of tears will directly lead to dry eye.
rheumatism
In hot summer, it's cool to be able to enter an indoor environment of about 20 ℃. However, our own adaptability is not so strong. If we suddenly enter a cold environment from a hot environment, we will suffer from cold pathogenic arthralgia, and even lead to rheumatism.
iaryngopharyngitis
As we all know, you need to close the doors and windows in the room to turn on the air conditioner. But living in this environment for a long time will make a lot of viruses and bacteria in the room multiply and grow. Because the air in the room is not circulating, it is easy to induce laryngitis.
Cold
The best temperature for human skin contact is 26 ℃, but many people are used to turn on the air conditioner very low, so that our capillaries will contract, sweat glands can not be opened, the resistance to disease will decline, leading to a cold.