Every morning and after dinner many neighborhoods gathered with people who love fitness, he (she) and the cheerful music dancing beautiful gymnastics. There is no denying that this kind of gymnastics self-indulgence, fitness is a great benefit. After all, it is a good way to get fit. But there are some fans who insist on jumping gymnastics came to the door, most encountered two problems: one is the knee jumps out of the problem: pain, and even a little swelling. The second is how to gain weight instead of losing it? The reason is simple: this kind of gymnastics, exercise intensity is not large, and the frequency of exercise is not high. So even if it is jumping on two hours can not consume many calories, hoping that the weight loss of people naturally will not be very effective. If the appetite increases at night after jumping exercises, there will be hunger, and then eat some snacks. Over time, over time, it is not surprising that the weight increased instead. So I call this kind of exercise jokingly as “fattening exercise”. Furthermore, “community fitness exercise” is mainly active joints, especially the knee joint, you know our joints and machine parts, will be worn through the movement, if excessive will damage the joint cartilage, and will produce chronic synovitis. There is no ideal treatment for chronic synovitis, and the measure to go along with it is to reduce the frequency of exercise, otherwise it will linger. Here to remind fitness enthusiasts, if you want to lose weight or weight is fat, do not choose the “community gym”, similar forms of exercise and the elderly practice waist, leg press practice splits, slow walking steps, etc., the common feature is: fitness efficiency is not high! Remember: fast walking or slow running is the classic way of fitness. Both intensity, and frequency can be based on cardiorespiratory function. If jumping “community gym” knee swelling and pain, you should choose another way to work out.