Working, studying and chatting in an air-conditioned room is a very pleasant thing, but behind the use of air conditioning, there is a hidden danger. You may get sick if you don't pay attention. The temperature difference between air-conditioned room and outdoor is large. If people often go in and out of air-conditioned rooms, it will cause cold symptoms such as cough, headache and runny nose. People who often use air conditioners in midsummer often have the above experience. If you stay in a low-temperature air-conditioned room for too long and wear thin clothes, it will cause joint pain, stiff neck and back, heavy waist and buttocks, pain and numbness in limbs, stiff joints, dizziness and brain swelling, or numbness in shoulders and necks. If you stay in an air-conditioned room for too long, it is easy to make people dizzy because of the bad air. These symptoms are air conditioning syndrome, commonly known as air conditioning disease.

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