Why do you catch a cold on a hot day?

Cause: Most colds in summer are caused by catching cold, and most colds in winter are caused by infection.

Generally speaking, the occurrence of colds is due to the decline of human disease resistance. Wind-heat cold feeling the evil of wind-heat is more common in spring. Summer damp cold is characterized by sultry summer and relatively high humidity. At this time, everyone is greedy for cold, such as blowing air conditioning and feeling the evil of cold. From the symptoms, wind-cold cold, wind-heat cold and summer-dampness cold all have symptoms of stuffy nose, runny nose and fever. The difference lies in wind-cold cold and wind-cold cold.

A series of cold symptoms such as stuffy nose, runny nose, headache and general pain are caused by upper respiratory tract infection caused by viruses or bacteria. Summer colds are rarely spread in public places by cold patients like winter colds. Summer colds are mostly caused by the sudden cold of the body, which cools the blood, reflexively causes temporary ischemia of the nose and throat, weakens the resistance, and makes the cold virus take advantage of it. Experts specifically analyze the causes of hot colds as follows:

First, due to the hot summer climate, the human body sweats more, and sweat gland secretion consumes a lot of energy.

Second, the days are long and the nights are short in summer. The sultry weather often affects people's normal sleep and rest, resulting in insufficient sleep.

Third, in summer, many people have poor appetite, mainly light food, which affects protein's intake.

Because of the hot weather, some people don't want to exercise, which reduces the exercise time. These factors will reduce the body's resistance and increase the chance of getting infected with the virus, thus causing a cold.

In addition to the above objective reasons, people's own ignorance of hot colds is also the reason for the aggravation of the disease. Many people are too eager to be cool, like to take a bath with cold water, wash their hair and sleep under the air outlet of the air conditioner ... these greedy behaviors are easy to catch a cold.