与枕头直接接触的是人体的颈椎部位,而颈椎与人体的肩背和腰部肌肉、韧带、椎间盘等都密切相关,由此可见合适的枕头对于人体健康的重要性。颈椎有一个前凸的弧度,称为生理性前凸,人们在任何情况下,都以能保持这种自然生理弧度为最舒服。人在睡觉时也应保持颈椎正常的生理性前凸,这样才 The direct contact with the pillow is the body’s cervical spine, and the cervical spine is closely related to the body’s shoulder and back muscles, ligaments, and intervertebral discs, thus showing the importance of a proper pillow for human health. The cervical spine has a lordosis curvature called physiological lordosis. In any case, people are most comfortable to maintain this natural physiological curvature. People should also maintain normal physiological lordosis of the cervical spine when sleeping.