Looking down at a mobile phone for a long time in daily life can be very damaging to the cervical spine and therefore needs attention. You can hold your mobile phone flat and parallel to your line of sight to reduce the burden on your neck, and after using electronic products for a period of time, carry out simple neck exercises to ease the stiffness of your neck. In addition, working with your head down for long periods of time and standing for long periods of time can also cause stiffness in the neck and needs to be taken care of.