In primitive times, people knew to use stones or bundles of grass and so on to cushion their heads to sleep. Modern medicine believes that in order to protect the normal physiological curvature of the cervical spine, people must use pillows when sleeping. If many people will not use the pillow, which inevitably some people unconvinced, but the fact is true, modern people have a lot of misunderstanding of the pillow and unreasonable use of habits. 1, the height of the pillow Normal pillow height should be 8-12cm, about a fist to a fist and a half or so, accustomed to sleeping on their backs, the height of the pillow a fist or so, accustomed to sleeping on the side, the height of the pillow in a fist and a half or so. “High pillow” point of view is very harmful, pillow too high will increase the angle of the neck and chest, so that the trachea ventilation is blocked, easy to lead to dry throat, sore throat and snoring, hindering the normal whistling, high-pillow will also make the chest and back muscles for a long time tension, resulting in muscle strain. Pillow is too low to slow down the venous return of the brain, arterial blood supply is relatively increased, thus appearing head up, irritability, insomnia and other discomforts, the most harmful to hypertensive patients. 2, pillow hardness Pillow too hard will make the head and pillow contact surface is too little, the local pressure is too large, in the next morning to produce head, neck, back, arms, hands and other places of numbness or pain and other symptoms. Pillow too soft will be difficult to maintain the height of the pillow, because too fluffy on the scalp compression area will also increase, not conducive to blood circulation. So it is important to choose the filler of the pillow, you can choose cotton, synthetic fibers and other fillers, you can also choose Chinese herbs, such as: cassia seeds, buckwheat, wild chrysanthemums and so on. Li Shizhen’s “Compendium of Materia Medica” is recorded: “buckwheat skin, black bean skin, mung bean skin, cassia seeds …… for the pillow, to the old man’s eyes. 3, the position of the pillow Sleeping head on the pillow in a reasonable position is very important. Generally speaking, the head is best placed in the center of the pillow on the position, so that you can stabilize the posture of sleep, to avoid frequent changes in posture at night caused by pillow; but also allows the neck to have a certain degree of support, to maintain the body’s normal physiological curve, so that the cervical spine is not forward flexion, nor sideways curvature, to maintain a proper backward position, so that the morning up will not be cervical spine soreness. Choose the right pillow and use it correctly so that your sleep will also be guaranteed.