1, going up and down the stairs Among the large and small body joints, the knee joint is the most frequent and most vulnerable to injury. Du Xinru said that when going up the stairs, the knee joint bears 4.8 times the weight, and 6.7 times the weight when going down the stairs. Very easy to produce pressure on the patellofemoral joint, for a long time it is easy to cause pain between the cartilage. 2, kneeling on the floor outpatient clinics from time to time encounter knee pain women to come to the doctor, they are mostly used to kneeling at home to wipe the floor, triggered by patellofemoral pain. Kneeling on the floor, the pressure of the patella will be pressed on the femur, equal to the cartilage between the two bones directly to the ground, a long time, some knees can not straighten, can not get up. 3, cross-legged sitting Many people like to cross-legged sitting, some young people also like to cross-legged sitting in bed, using a laptop computer. In fact, while sitting cross-legged, the knee cartilage has been under pressure, but also to bear the weight of the upper body. If you sit cross-legged using the wrong force, a long time, some people’s knees can even immediately too painful to get up. 4, hand overwork housewives do housework, although the amount of labor are not large. But a long time washing dishes, scrubbing the floor, etc., wrist joint pain for sure. In addition to a long time stimulated by cold water, more likely to inflammation. Excessive weight-bearing can cause arthritis in the wrist and elbow. 5, look at the computer, television posture is not right cervical spine section 5, section 6 is the most vulnerable place, in addition to sports injuries, cervical spine injuries are mostly related to posture. The human neck naturally presents a C-shaped curve, is to allow the head in the downward pressure, the force can be evenly distributed to each joint. But modern people often look at the computer, watch TV but less exercise, the head is often unconsciously tilted forward, over time, the curve of the cervical spine will be changed, resulting in the cervical spine in the middle and lower section of the force is greater, “office workers”, drivers are particularly serious.