To sit on the waist is good, you should choose a comfortable chair, sitting hip can be full of chairs, and let the waist close to the back of the chair or find a comfortable cushion, two feet flat on the ground, knees and hips flush, rather than choose a short bench, because sitting on a short bench will lead to a flexion state of the waist, resulting in increased pressure between the vertebrae, so that the intervertebral discs are prone to degeneration as well as disc herniation, and Easy to appear lumbar muscle strain, the formation of sterile inflammatory lesions, resulting in recurring pain in the back. In addition, attention should be paid to the muscles on the left side of the waist alternating with the muscles on the right side for weight bearing when sitting, so that the muscles can be effectively relaxed. Also be sure to stand up every hour to rest for 10 minutes and do some stretching exercises to help relieve the fatigue of the lumbar muscles.