With the change of life and work style, people's sedentary phenomenon is becoming more and more common. The incidence rate of cervical spondylosis, periarthritis of shoulder, sciatica and other diseases is also rising, and the trend is younger. In 2019, the "occupational health protection action" listed cervical spondylosis, shoulder periarthritis, low back pain, bone hyperplasia, and sciatica as diseases that workers should prevent. For people with insufficient exercise time, bad posture and physical discomfort often form a vicious circle. CCTV cooperated with Shanghai Institute of physical education to launch a series of public courses on sports and health. You know what? You may never stand right! If you don't believe it, look down at your lower abdomen. If you are not fat but your lower abdomen is prominent, it may be that there is something wrong with your posture. Hu Haoyu, director of the rehabilitation department of the Orthopaedic Hospital of upper body injury, introduced that under the correct standing posture, the force line of the human body will pass through the peak of the earlobe, the center of the trunk, the greater trochanter of the femur, the front of the center of the knee joint and the front of the lateral malleolus in turn. In life, some people will have a belly bulge and a waist collapse, while others will have a flat back. These bad posture may appear alternately on you at different times of the day, Standing posture deviated from the line of force will make the body like a stretched rubber band, which will greatly increase the tension and make the muscles more prone to fatigue. According to statistics, 85% of men and 75% of women show a state of bulging stomach and collapsing waist, which makes 80% of people suffer from low back pain. Why is the natural standing posture incorrect? We need to understand two concepts: pelvic anteversion and pelvic retroversion. Pelvic anteversion may be caused by excessive tension of extensors at the waist and flexors at the hip joint, and weak muscle strength at the hip and abdomen. On the contrary, pelvic retroversion may be caused by excessive tension of rectus abdominis and weak strength of extensors and hip flexion muscles in the waist. When people sit for a long time, many of them are bent. At this time, the state of pelvic reclining will cause lumbar kyphosis to squeeze into the intervertebral disc, and then lumbar disc herniation may occur, which may lead to numbness and weakness of the lower limbs. How to improve these two bad postures? Teach you the easiest way to improve! (outlook new era)