Everyone knows this sentence, "Life lies in exercise!" But the definition of movement here must be scientific movement. So what misunderstandings about sports will we encounter in life? Girls like to go to the gym to do aerobic exercise. But many aerobics instructors have different degrees of knee problems. This is because aerobic exercise needs to ensure a certain intensity of exercise, and is limited by the venue, so many actions similar to stamping feet are arranged, which is called high-impact exercise in sports medicine. The high-impact movement of the leg does great harm to the knee joint. Aerobic aerobics instructors usually stamp their feet for several hours every day, gradually forming rickets of the knee joint and often feeling knee pain. Therefore, when we step on the ground, we should not use too much force, but always change our movements. Running is a very good exercise, which can give the human body a comprehensive exercise. But when running, you must avoid running on the concrete floor, because the hard road surface can also cause damage to the knee joint. At the same time, we should choose comfortable sports shoes to prevent unnecessary sports injuries such as ankle sprain. Some people like to run in circles on the playground. I suggest that people who run in the sports ground must always change their running directions, that is, run clockwise for a while and then run counterclockwise. Because running in circles in one direction for a long time is easy to cause the body to tilt, and even walking for a long time is crooked. Some people like climbing mountains, but they will feel hard when they go down. This is because when people go up the mountain, their physical strength is relatively balanced, and their hips, thighs, knees, calves and feet should all participate. However, when going down the mountain, the human body is in a posture similar to kneeling posture, and the strength of the body is basically concentrated in the knee joint, so it will feel hard. So try not to go straight when going downhill, and you should take the zigzag route. I once came into contact with a retired teacher. People in their sixties walk like people in their seventies and eighties. Later, I learned that he had many bone spurs in his knee joint. This is because he insisted on playing tennis for four hours every day after retirement. In fact, tennis is a very good sport. But I worked hard after retirement because I basically didn't exercise before retirement. This sudden high-intensity exercise makes the human body very uncomfortable and causes physical strain. Therefore, the movement must be gradual. Playing golf is very popular now. In fact, playing golf requires a certain sports foundation. Because when playing ball, you need the flexible cooperation of hips, shoulders, waist and other parts of the human body, and at the same time you must have a certain explosive force. Many people usually have no time to exercise at work, and go out to play golf on weekends. They didn't warm up well before, which is easy to cause waist injuries. We must keep exercising, and each of us should choose the most suitable exercise method according to our physical condition. Pay attention to reasonable diet and strengthen nutrition after exercise, and seek professional treatment and recovery from injury. Only in this way can our bodies be healthier.