The normal structure of the human body, the spine is bent by four factors from the side, and the cervical vertebra is physiologically convex, that is to say, in the slightly convex posture, the muscles of the neck are basically in a balanced and relaxed state, and the intervertebral disc and surrounding ligaments of the cervical vertebra are also in a balanced state, with the minimum pressure, that is, in a good state.
When sleeping, if the cervical vertebra can maintain this state, the muscles, ligaments and other tissues of the neck can get a good rest, and the pillow is not suitable, these tissues will always be in a state of tension, unable to sweep away the fatigue of a day, and may even aggravate the fatigue of a day, which is easy to get injured over time.
In addition to the cervical spine, the head also needs to be considered. The back of the head said, "I am so old, you must find me a good place to rest." Pillows Pillows need not only "pillows" but also "pillows and necks". Therefore, in the choice of pillows, we need to choose pillows that can fit the curve of the head and neck.
The traditional shape of the pillow is high in the middle and low around. When we lie down, we are in a suspended state, and the cervical vertebra is easily twisted, so we can't rest and relax well, and we are prone to stiff neck or muscle aches.
The wavy pillow is very prominent, which can not only put the back of our head in, but also support our neck well. No matter you lie on your side or face, you can ensure the normal physiological curve of the cervical spine and ensure the full rest of your head and neck.
2, the height of the pillow
The height of the pillow is related to age, sex and habits.
In terms of age, generally with the growth of age, people become more and more hunchbacked. The older people lie down, the higher the distance between their necks and the bed surface. Therefore, older people choose a higher pillow height.
Men and women have different needs for pillow height. In most cases, men's shoulders are wider. Physiologically, men have more muscles near their shoulders and necks than women. Therefore, when a man lies on his back or side, the pillow should be relatively high.
3. Material of pillow
At present, the commonly used materials are buckwheat skin, down, man-made fiber or acrylic cotton, latex, polyester fiber and so on.
Buckwheat husk is the most traditional material, and its advantage is plasticity. By pressing it in the middle with your hand, you can create a wave shape suitable for the physiological protrusion of the back of our head and cervical spine. And the height can be adjusted as required. Basically suitable for everyone, suitable for people with different requirements on pillow height, and the price is also very cheap. The disadvantage is that it is hard and easy to deform, and it is easy to make noise when turning over, which may not be suitable for some people with neurasthenia, sleep disorder and insomnia. It is easy to reduce the support ability after using it for a long time.
Feather pillow core, or man-made fiber pillow core, and man-made fiber is also called acrylic cotton. Its shape is the traditional middle-high and low shape, and it will be used more in hotels. Advantages: good elasticity, softness, portability, beauty and luxurious atmosphere. The disadvantage is that the shape is highly fixed, which is not suitable for the shape of the back neck and the back of the head and is not healthy.