The human body has normal physiological curvature, especially the cervical vertebra. Pillows can help the human spine maintain a good curvature, thus reducing the injury of cervical spine. If the protection is not good, symptoms such as dizziness, nausea, vomiting, neck pain and even severe cervical spondylosis may occur. At the same time, if you don't use a pillow, you can increase the blood circulation in your head and feel dizzy and weak the next day. Therefore, it is recommended to give a comfortable pillow when sleeping. The height of the pillow directly affects people's sleep quality.

Therefore, you must choose a comfortable pillow in your life. The pillow can't be too high or too low. It can be seen that pillows play a vital role in people's sleep.