Jumping rope precautions: jumping rope itself is a good whole body exercise, but in promoting blood circulation, exercise cardiorespiratory function and enhance the coordination of the limbs at the same time, but also increased the burden on the knee joint. The elderly, the knee joint itself has existed degenerative changes, its function can only maintain the needs of daily life and moderate exercise. If barely jump rope, more than the knee tolerance limit, is bound to aggravate the knee joint degeneration and injury, and then lead to knee pain and joint function decline. Obese people choose sports to lose weight means is correct, but, fat people do sports have to pay attention to protect the knee joint, lest tendons and bones damage. Everyone in sports, walking will cause wear and tear on the knee joint, but after rest can recover on their own, but obese people are heavier, the pressure on the knee joint during exercise is higher than normal people, more likely than normal people wear joint, ankle swelling and pain, knee inflammation, etc.. In addition, now many white-collar workers do not have time to go to the gym, often choose some simple office exercise, such as running stairs, jump rope to lose weight, but they only focus on oxygen consumption, exercise and calorie consumption, but ignore the most important weight-bearing factors of the joint. Increased knee exercise can lead to damage to the cartilage and ligaments of the knee, and once the wear and tear is excessive, it can lead to severe cartilage wear and ligament aging and various bone and joint diseases. People are engaged in different jobs, the basic quality of the body varies, should choose the appropriate exercise methods for themselves. If you choose improper, but will damage health. To jump rope, this is a more strenuous jumping sports, the circulatory system, respiratory system and limbs of the health requirements are high. Vigorous jump rope exercise will cause: cardiovascular and respiratory system burden, increase the probability of myocardial ischemia and respiratory distress, serious cases can induce a stroke or myocardial infarction; increase the burden on the knee joint, induce or intensify the decline of knee function, affect daily life; elderly people are not agile, poor coordination, jump rope inevitably stumble, easy to fall, if this leads to fracture, it is a more than worthwhile The thing. With the improvement of people’s living standards, people’s health awareness is getting stronger and stronger, more people join the army of physical exercise. However, a small number of people go to the hospital because of exercise, which is the “complications” caused by the wrong choice of exercise and excessive exercise amplitude. Therefore, we should choose the right exercise in accordance with their age and physical condition.