2021-08-18
2. Height: Modern research believes that the pillow should be slightly lower than the distance from the shoulder to the neck on the same side. The occiput height is determined according to the physiological curve of the 7 cervical vertebrae arranged in the human neck. Only by adapting to this physiological bending can the shoulder and neck muscles, ligaments and joints be in a relaxed state. Too high or too low pillows are not good for human health.