With the popularity of computers and cell phones, more and more people are “lowering their heads” to the point of suffering from neck diseases. Cervical spondylosis is now a social “disease” and is no longer the “patent” of the middle-aged and elderly. The performance of cervical spondylosis 1, the lighter the stiffness of the neck, back and shoulders, soreness; 2, the heavier the recurrent fall of the pillow, accompanied by numbness of the upper limbs, dizziness and headache and even walking unsteadiness and other symptoms. Correct “posture” is the most important people to have a correct posture, when in elementary school, teachers will let each student sit upright: head, shoulders flat, back straight, feet safe. In fact, this is the meaning of “sitting like a bell”. 1. head is: the lower forehead slightly closed, eyes forward; 2. shoulders flat: shoulders open, the two ear tips and shoulder parallel; 3. back straight: chest and abdomen; 4. feet safe: lower legs and thighs into 90 degrees so that the feet natural, step on the ground; In fact, everyone has their own customary posture, whether your posture is standard or not, as long as 45 minutes – 60 minutes to change the posture, lift the head shrug, you can minimize the damage to the cervical spine.