When bending over, the muscles of the lumbar region, the ligaments between the lumbar vertebrae, and the fascia of the lumbar region are subjected to the pulling force brought about by bending over, and the lumbar intervertebral discs are also subjected to pressure from the upper body, resulting in symptoms of pain from bending over. Consider the following aspects: First, patients with lumbar muscle strain, because the muscles are stretched for a long time and lead to injury, when bending over, the muscle damage is stretched and pain occurs, through rest and sleep, which can make the pain symptoms ease or even disappear, after straining or sitting for a long time. Second, injury to the lumbar intervertebral ligaments can also cause painful symptoms in the lower back due to bending movements, as bending aggravates the injury. Third, patients with lumbar fasciitis have pain after lumbar activities because of adhesions of the fascia, but patients with fasciitis can relieve the pain symptoms by their own activities, and the pain will reappear after resting and suddenly moving the lumbar area. Fourth, patients with herniated lumbar discs, because bending over can lead to increased lumbar disc herniation and compression of surrounding tissues, causing lumbago symptoms.