[Exercise in an air-conditioned room may be harmful to health]

At school, 3: 0 1 live in dormitory, classroom and canteen. After work, 2: 0 1 lives in the office and at home. Miss Guo felt that life was boring, and the whole person became dull and lifeless, and her body became much weaker. The considerate husband gave her a fitness card, hoping that she could make friends through fitness, escape from boring life and depressed mood, and exercise at the same time.

However, after going to the gym several times, she got sick instead. My throat was uncomfortable, and then I caught a cold and had a backache.

"Totally enclosed, poor air quality and sweating on air conditioning are the main culprits of improper fitness and illness." Yu Hongtao, chief physician of the Department of Respiratory Medicine of Zhengzhou Fifth People's Hospital, said, "Fitness in a gym with central air conditioning may not do much harm to the body, but in a gym without central air conditioning, we must be careful not to blow against the air conditioning, because after exercise, the blood vessels on the skin surface dilate, the pores open, the lactic acid secreted by muscles increases, and the body is prone to muscle soreness after wind."

"The original purpose of fitness exercise is to make the body sweat, but the indoor temperature is too low, which will make athletes sweat, leading to clogged pores and colds." Yu Hongtao said, "If the space of the gym is relatively closed, narrow and crowded, the sweat and microorganisms on the surface of the human body will increase accordingly, and bacteria, viruses and pathogens in the air will easily induce respiratory diseases such as pharyngitis and tracheitis."

Because you consume a lot of physical strength, you need to breathe a lot of fresh air and emit a lot of carbon dioxide. Especially in the gym, if there is no good ventilation and convection device, it will lead to the continuous circulation of exhaust gas in a limited space, which is unfavorable for exercisers doing aerobic exercise. During exercise, the indoor temperature should not be too low, and should be controlled at around 26 degrees Celsius.