1, crossed legs Stretched legs will lead to pelvic tilt, lumbar spine under uneven pressure, resulting in lumbar muscle strain, the same will lead to uneven force on the lumbar intervertebral disc, a long time this posture is a risk factor for lumbar disc protrusion. In particular, adolescents in the growth and development period, often stretched two legs easy to form a hunchback and spinal curvature. Experts remind: usually try not to stilt, sit down to keep the pelvis upright, so that the lumbar spine is evenly stressed. 2, long-term standing work Long-term upright work will lead to lumbar muscle tension, lumbar spine long-term stress increased, the risk of lumbar disc protrusion increased. For example, the salesman is because of long-term standing work, lumbar back muscle tension, thus inducing lumbar disc protrusion. Experts remind: work on tiptoe and alternate feet can increase lumbar convexity, while relieving lumbar back muscle tension. If standing for a long time can do some lumbar stretching movements. 3, “old woman” sitting posture “old woman” sitting posture refers to nesting on the sofa or stool. This will lead to a reduction in lumbar convexity, increased pressure on the intervertebral discs, maintaining this posture for a long time will lead to increased lumbar disc degeneration. Experts remind: when sitting to keep the upper body straight, abdominal, lower limbs together. If sitting on a chair with a backrest, should be in the above position on the basis of the back of the chair as far as possible, so that the lumbosacral muscles are not too fatigued. 4, poor sleeping posture lying flat, if the neck and waist without support, will lead to muscle tension in the lumbar back, which is why many people sleep on the sofa or soft bed after the waist will feel very uncomfortable reason. Experts remind: try to choose a slightly harder mattress when sleeping, lying down in a soft pillow under the knee, which can make the hip and knee joints slightly flexed, lumbar back muscles relaxed, disc pressure is reduced to reduce the risk of disc herniation. 5, single-handedly carrying heavy objects carrying heavy objects will make the body as a whole tilt, the direction of force on the intervertebral disc is not uniform, muscle tension is not the same, one-handed force, uneven weight distribution will make the spine on both sides of the uneven force, the disc is very harmful. Experts remind: in ordinary life, try to carry the same weight of items with both hands, to ensure that the torso balance and lumbar vertebrae are evenly stressed, and not to carry heavy objects suddenly too much force, posture conversion is not too violent. 6, twist waist movement some need to twist waist movement, such as golf swing, table tennis pull arc ball or do exercise twist waist movement need waist force drive arm, so the normal twist waist movement on the disc long-term twisting and extrusion, is a high-risk action of disc protrusion. Experts remind: patients with lumbar disc herniation try to avoid doing some sports that need to twist the waist, normal people in sports should also do a good job of waist protection and prevention. 7, wear high heels The sole of the shoe has a foundation function, directly affecting the body’s center of gravity. Wearing high heels will make the human body’s center of gravity shifts excessively, which will inevitably cause the pelvis to tilt forward, the spine curvature increases, the lumbar spine force becomes concentrated, long-term so it is easy to cause intervertebral disc injury. Experts remind: usually try to wear flat shoes, office workers can prepare a pair of flat shoes in the office. If you have to wear high heels on special occasions, try to put the weight on the heel rather than the forefoot when walking. 8, chronic cough constipation Long-term chronic cough and constipation will lead to increased abdominal pressure, which will also make the intervertebral discs under increased stress, which is also a clear risk factor for lumbar disc herniation. The lumbar region also exerts force when coughing, and for patients with herniated lumbar discs, a violent cough can involve pain in the lumbar region. Experts remind that if you have chronic cough and constipation, you must treat the cause in a timely manner. If dragged, not only is the condition likely to worsen, but it may also cause or aggravate symptoms such as herniated lumbar discs. 9, bending over to carry heavy things Directly bending over to carry things will lead to a sudden increase in force on the lumbar disc, which can easily cause the lumbar disc to protrude through the weak area, and many patients with low back pain have their symptoms aggravated after bending over to carry heavy things. Experts remind: when carrying heavy things, it is best to kneel on one knee first, as close to the body as possible, using the arms to lift the weight to the middle of the thigh, and then stand up in a way that keeps the back straight, slowly get up at the same time, the weight should be as close to the body as possible.