Only people who have experienced Zhang Chengyu's shoulder stiffness and pain know that even if he can't move heavy objects and do housework, it still hurts. Even if he moves, it is as difficult to move flexibly as a robot ... The culprit of shoulder stiffness and pain is probably the rigidity of trapezius muscle in the back and poor blood flow. Japanese body-shaping experts recommend a simple exercise to help relax trapezius muscles and restore comfortable and flexible health of shoulders. It is also possible that the bad posture makes the fat run back, and it may also cause shoulder pain. Kanae Kondo, a lecturer and fitness instructor at Nagoya University in Japan, said that bad posture, hunchback and other reasons make the shoulders lean forward, which will make it difficult to make full use of muscles such as trapezius and latissimus dorsi located in the back, and it is easy for the fat at the back of the arm to move here, resulting in back obesity. The problem of back obesity will also make it difficult for shoulders and arms to return to the correct position, increase the burden on the neck and shoulders, and cause problems such as shoulder stiffness and migraine. In contrast, if the trapezius muscle can be stretched, it can not only tighten the back and slim the waist, but also help to promote blood flow and improve the problem of stiff and sore shoulders. Mori Jun-hyun, a well-known Japanese body-shaping expert, also said that the trapezius muscle extending from the neck to the back is prone to stiffness and tightness due to leaning forward and using the mobile phone, resulting in stiff and sore shoulders. Akihiko Nakagawa, a famous plastic surgeon and vice president of Ai Tong Memorial Hospital, pointed out that if the trapezius muscle bears too much weight, it will press the microvessels, resulting in poor blood circulation, and the muscle can't absorb oxygen and nutrition, thus causing stiffness and pain. Simple action stretching trapezius muscle to prevent shoulder pain Sen Junxian believes that consciously exercising trapezius muscle is expected to reduce the burden on the body, help maintain the correct posture, and then effectively adjust the body curve. Chennai Kondo recommended an action to relax the trapezius muscle, which can not only improve the stiffness and soreness of the shoulder, but also make the back slim: only those who have experienced it know the pain of Zhang Chengyu's stiffness and soreness of the shoulder, not to mention that he can't carry heavy objects and do housework, even changing his posture often hurts, and even he can't move flexibly like a robot ... The chief culprit of the stiffness and soreness of the shoulder is probably the stiffness of the trapezius muscle in his back and poor blood flow, Japan. Poor posture allows fat to run back, which may also cause shoulder pain. Kanae Kondo, a lecturer and fitness instructor at Nagoya University in Japan, said that bad posture, hunchback and other reasons make the shoulders lean forward, which will make it difficult to make full use of muscles such as trapezius and latissimus dorsi located in the back, and it is easy for the fat at the back of the arm to move here, resulting in back obesity. The problem of back obesity will also make it difficult for shoulders and arms to return to the correct position, increase the burden on the neck and shoulders, and cause problems such as shoulder stiffness and migraine. In contrast, if the trapezius muscle can be stretched, it can not only tighten the back and slim the waist, but also help to promote blood flow and improve the problem of stiff and sore shoulders. Mori Jun-hyun, a well-known Japanese body-shaping expert, also said that the trapezius muscle extending from the neck to the back is prone to stiffness and tightness due to leaning forward and using the mobile phone, resulting in stiff and sore shoulders. Akihiko Nakagawa, a famous plastic surgeon and vice president of Ai Tong Memorial Hospital, pointed out that if the trapezius muscle bears too much weight, it will press the microvessels, resulting in poor blood circulation, and the muscle can't absorb oxygen and nutrition, thus causing stiffness and pain. Simple action stretching trapezius muscle to prevent shoulder pain Sen Junxian believes that consciously exercising trapezius muscle is expected to reduce the burden on the body, help maintain the correct posture, and then effectively adjust the body curve. Chennai Kondo recommended an action to relax trapezius muscle, which can not only improve the stiffness and soreness of shoulders, but also make the back slim: in the film, the left hand is raised horizontally outward, while the head is tilted to the right, and the right hand gently presses the left ear from above. When exhaling, extend your left hand outward and slowly lower it. Keep your left hand working. When inhaling, lower your chin and face down to the left. Keep your hands on the back of your head for a few seconds, then slowly let go of your hands and let your head return to its original position. The other side does the same.