Three months after the lumbar disc herniation steel nail surgery is not recommended to run downstairs, after checking if the implant if has healed, you can properly jogging. Lumbar disc herniation is a disease in which the lumbar disc undergoes degeneration, leading to rupture of the annulus fibrosus and protrusion of the nucleus pulposus. Internal fixation steel nail surgery is a type of surgery that removes the disc, puts it between two vertebrae with an artificial disc, fixes it with a steel nail, and implants bone around the vertebrae. It usually takes 3 to 6 months after surgery for the implanted bone to heal completely, and it is recommended to do some sports with a higher range of motion after healing. Because running is a more strenuous exercise with a greater load on the lumbar region, it is not recommended to run 3 months after lumbar disc herniation steel nail surgery. Patients can go to the hospital for a review to observe the healing of the bone and determine the intensity of the exercise according to the specific condition.