Improper sitting posture is the biggest cause Office workers spend long hours with their heads down, or on the computer, the cervical spine is in a flexed position or some specific positions for a long time, so that the pressure in the cervical disc is increased, the muscles and ligaments in the back of the neck are strained and damaged, which is very likely to induce cervical spondylosis. The common symptoms of cervical spondylosis are head and neck pain, numbness of the upper limbs, restricted movement, sometimes dizziness, headache, blurred vision, and in severe cases, nausea and vomiting. Change the posture for proper prevention Sitting as close as possible to the distance from the workstation, waist straight, shoulders back, and try to avoid excessive head and neck leaning forward or backward to avoid head deflection. The computer and eyes should be kept at a proper distance, and it is best to look at the computer screen with a level gaze. In between work, you should often do shoulder lifting movements, and every 30 minutes you should lift your head and lean back for a moment, and gently move your neck, and it is best to leave your desk for a while every 2 hours, stand naturally, cross your hands on your neck, put your hands forward and your neck back, every 3-5 seconds, and repeat this.