The cervical vertebrae are connected by intervertebral discs and small joints between the vertebrae, which are fixed by the strong muscles around the cervical vertebrae. The stiffness of the cervical vertebrae should be related to the strain and strain of the cervical vertebrae due to the recent long time of playing with the cell phone with the head down, sitting in front of the computer, sitting and driving for a long time or simply sleeping with the pillow too high. Due to the anatomical characteristics of the cervical spine, in addition to the stiffness of the cervical spine, there will be a relaxation of the muscles around the cervical spine in the process of rotational movement to produce such a sound of small joint activity. This also suggests that these previous movements are not conducive to the recovery of their own cervical spine, and now you should try not to play with your head down for a long time, these cervical strain strain movements, you can do acupuncture, massage, physiotherapy, relax the muscles around the cervical spine.