I often hear patients with lumbar disc herniation say that their onset factors are: sneezing, bending over to pick up things, and twisting their back when they are not working ……. Is this really the case? Are our intervertebral discs so fragile? Since humans have been able to evolve to this day, and it has been many years since we crawled to walk upright, the current structure of humans should be fully adaptable to the current living environment and lifestyle. A healthy person will not have a herniated disc even if he or she is carrying 100 kg of weight, so why would a herniated disc suddenly appear after sneezing or bending over to pick up something? The only reasonable explanation is that the person’s lumbar discs are in a state of extreme fatigue and can no longer withstand any slight trauma. The extreme fatigue of the disc is the essence behind the phenomenon. From the biomechanical point of view, when the human body is bending and sitting, the pressure on the posterior fibrous ring of the intervertebral disc is the greatest, and the posterior fibrous ring of the intervertebral disc becomes more and more fragile under the action of long-term continuous tensile stress after sitting, and when the quantitative change becomes qualitative change, the posterior fibrous ring of the intervertebral disc is torn, and the nucleus pulposus wrapped around the fibrous ring of the intervertebral disc then protrudes from the fissure. The nucleus pulposus then protrudes from the fissure. This explains why more and more white-collar workers are at high risk of lumbar disc herniation! The prevention of disc herniation should start with avoiding sedentary activities. Preventing the recurrence of herniated discs should also start with avoiding sedentary activities.