The spine will be comfortable after a popping sound, mainly because some unstable synovial joints have been slightly reset, which will not stimulate the surrounding tissues, and will produce a loud sound during the reset process; and without the stimulation of the surrounding, the symptoms will be significantly reduced and will feel comfortable. This disorder between the synovial joints is mainly due to the frequent maintenance of a posture and cold, which can easily cause excessive stretching of the synovial joints, resulting in laxity of the surrounding ligaments; under cold conditions, inflammatory metabolites gradually accumulate here and blood circulation slows down, resulting in a state of relative laxity of these joints over time, which can easily cause degeneration and hyperplasia. This can lead to degeneration and hyperplasia. After reversal or revision, the synovial joints are gradually repositioned and the surrounding tissues are no longer irritated, and the symptoms are significantly reduced and become comfortable.