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 equipment and convection device, it will lead to the continuous circulation of waste gas in limited space fitness, which is not good for exercisers doing aerobic exercise. The indoor temperature should not be too low during exercise, and should be controlled at around 26℃. 2 1 Misunderstanding of Fitness Exercise Some people persist in wrong exercise habits and actions for a long time because of their lack of understanding of the nature of exercise, their own physiological stages and safe exercise, and it is difficult to achieve the expected results, even though some benign changes have caused damage to other aspects of the body. Myth 1: The initial exercise is a high-intensity exercise. Sudden large-scale exercise makes it difficult for the body to adapt, which may lead to severe fatigue, body aches or recurrence of old diseases, and may also cause tendon and muscle strain, making it difficult to keep exercising for a long time. The correct exercise method is: start with a small amount of exercise, small amplitude and simple movements, so that the body can have an adaptation process, also called fatigue period, about half a month, and then gradually increase the amount of exercise and increase the amplitude, and the movements should change slowly from easy to difficult. Myth 2: The first time you exercise with equipment, you think that you can get exercise only by doing all the equipment once. In fact, there is absolutely no need to make equipment that can't land every time you exercise. That not only takes up a lot of your time, but also makes it difficult to maintain normal exercise because of sudden excessive and intense exercise. The correct way is to ask a fitness instructor or make an optimal exercise plan according to your own situation, and realize your fitness plan step by step in a planned way. Myth 3: As long as you exercise more and don't have to control your diet, you can achieve the goal of losing weight. This method can only achieve the balance of heat in and out or not increase obesity. In fact, drinking sweet drinks, eating cakes and dried fruits, especially dried fruits that can extract oil and high-calorie foods, can make your hard-earned weight loss achievements go up in smoke. Therefore, in order to achieve a lasting weight loss effect, besides exercise, we should also make reasonable adjustments in diet. Myth 4: Fasting exercise is harmful to health. Studies have proved that moderate exercise, such as walking, dancing, jogging, aerobic exercise, cycling and so on. 4 ~ 5 hours after a meal (that is, on an empty stomach) helps to lose weight. This is because no new fatty acids enter the body at this time, and it is easier to consume excess fat, especially postpartum fat. The weight loss effect is better than 65438+ exercise for 0~2 hours after meals. Myth 5: Only sweating is effective. Sweating without sweating cannot be used to measure whether exercise is effective or not. The sweat glands of human body are different, which are divided into active and conservative types, which is related to heredity. Warm-up is first to adapt to the subsequent exercise, which is conducive to stretching and avoiding injury. Warm-up is not necessarily sweating. Myth 6: The greater the exercise intensity, the better the weight loss effect. That was not the case. Studies show that the reduction of body fat depends on the length of exercise, not the intensity of exercise. Because at the beginning of various sports, the glucose in the body is consumed first, the sugar is consumed, and the fat is consumed. But strenuous exercise is exhausted after consuming sugar, and it is difficult to continue, so fat consumption is not much, and the purpose of losing weight cannot be achieved. Only slow and steady exercise can consume more calories and achieve the goal of losing weight. Reference source: