Pillow beneficial to cervical health should have the following three points: the right height, good breathability, comfortable softness. (1) height Generally speaking, a reasonable height should be the height of one’s fist after pillowing down. Such a height to keep the neck in a comfortable position. As sleeping will change action, supine and side lying on the pillow height requirements are different, the height of the pillow should also be able to change, which requires a good elasticity of the pillow. People tend to pay attention to the supine, the height of the neck and the back of the head between the physiological curve, the pillow made of the neck high, the back of the head low shape. This does increase the comfort of the pillow to a certain extent, to avoid some damage to the cervical spine, but it can not meet the needs of the side lying. Over time, the natural bending state of the cervical spine will change, compressing the nerves and blood vessels. It is worth noting that: long-term use of too low pillow or no pillow will damage the muscles of the cervical occipital region, resulting in headaches, dizziness or vertigo. And long-term use of too high pillow, the main neck 4 cervical vertebrae below the muscles, resulting in neck and shoulder soreness or upper limb numbness. Generally speaking, the length of a single pillow to exceed the width of their shoulders 15 cm is appropriate. For people who are used to lying on their backs, their pillow height should be compressed and their own fist high ( the height of the clenched fist tiger mouth upward for the fist height standard ) equal to appropriate; and people who are used to sleeping on their sides, their pillow height should be compressed and their own side of the shoulder width height is appropriate. (2) the choice of the inner filling pillow can not be too hard nor too soft, the market sold hot “memory pillow”, claimed to be ergonomic, is the best sleep partner, but I think, memory foam pillow actually memory is not the “height” but the head The position of the head, can not guarantee a fist high. Sponge, plastic, plastic and other materials are not breathable and not conducive to sleep. The filler can not be a large piece of cotton or sponge, it is best to use a finer granular filler. Because the granular filler can be well shaped, the back of the head can be pressed out of a crater when sleeping, and the corresponding raised part can just hold up the forward convex neck. Another requirement of the filler is a certain degree of water absorption, so that it can absorb sweat and keep the neck dry, so that after use, the pillow should often be dried out. The filler should not be a large piece of cotton or sponge in the first place, it is best to fill it with finer granular material. Because the granular filling can be well shaped, the back of the head can be pressed out of a crater when sleeping, and the corresponding raised part can just hold up the forward convex neck. Another requirement of the filler is a certain degree of water absorption, so that it can absorb sweat and keep the neck dry, so that after use, the pillow should often be dried out. We believe that the traditional buckwheat bark, cassia seeds, etc. is the ideal filler. In short, a pillow is not suitable, you can feel it when you try it. If you wake up, feel uncomfortable neck, drowsy head, it is time to replace the pillow suitable for you.