1, Sleeping posture: Lying on your back and side can make the respiratory tract unobstructed, the chest and abdomen are not under any pressure, and the muscles of the limbs are easy to relax. 2, the right pillow: the right pillow should conform to the physiological curvature of the human cervical spine to ensure that the neck and beans can get enough rest, so it can not be too high or too low; The hardness of the pillow should not be too hard (affecting blood supply) or too soft; Lukewarm 3, pillow posture: the neck should be placed on the pillow, can not be suspended, so that the head remains slightly backward.