The pillow is part of the sleeping system. It serves to support the neck vertebrae. The shoulder and neck areas are very sensitive parts of the body and often cause muscle tension and disc pain. The consequences of this are headache, tingling in the hands or a feeling of stiffness in the neck area. Neck complaints often get worse during the night. This is caused by the fact that the pillow does not conform with the constitution of the spinal column at this point.