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Sleeping on the stomach will cause our cervical spine to curve downward, similar to the curvature of the cervical spine when we slightly lower our head. 33° scientific support can make the cervical spine close to the natural curvature. When a person is sitting or standing upright, the cervical spine is interrupted and presents a forward convex arc (about 35°-45°), that is, the physiological curvature of the cervical spine. Our pillow is close to the natural physiological curvature of the cervical spine, the cervical spine can still stretch naturally when sleeping on the back. When sleeping on the side, the height of the shoulder makes the cervical spine slightly higher than the height of the normal supine sleeping. The 11.9 cm high curve can provide enough support for the shoulders and better fit the cervical spine traction curve when sleeping on the side.







