The pain of the sciatic nerve is generally caused by degeneration of the intervertebral disc. The nucleus pulposus protrudes through the rupture of the fibrous ring of the degenerated disc, compressing the nerve root, which leads to symptoms such as sciatic nerve pain, numbness, and even restricted movement when walking. The intervertebral disc serves to absorb shocks and cushion the pressure on the lower back. During running, the load on the lower back increases, which could potentially exacerbate the symptoms of sciatic nerve pain. Therefore, it is best to avoid running exercises when sciatic nerve pain is caused by degeneration of the intervertebral disc.