adjustable memory foam pillow height: When sleeping, if the pillow is too high, it will not only affect sleep, but also can not maintain the normal curvature of the cervical spine, increase the burden of the cervical spine, and it is easy to stiff neck. If the pillow is too low, the head will become congested, causing swelling and snoring of the eyelids and face. How high is the most scientific pillow? Experts from the China Academy of Chinese Medicine say that the jaw-shoulder line (the distance from the lower jaw to the acromion) or the transverse diameter of the palm. Equivalent to the height of a raised fist. Generally, 7-11 cm is more suitable for adults.