Abstract: A chair having a backrest with pressure points arranged in rows corresponding to vertebra in the cervical, thoracic and lumbar sections of the spine. The rows within the cervical and thoracic sections have at least four pressure points spaced laterally. The rows within the lumbar section have more than four pressure points spaced laterally. Within the lumbar section, each successive row includes at least two more pressure points spaced laterally than the previous row. The pressure points each include a protuberance embedded within a layer of elastomeric foam material and each protuberance includes a tip portion that is free of the layer of foam material. The tip portions project from a recessed surface from a backrest surface and are located within a void formed between the recessed surface and a flexible cover. The pressure point afferentation backrest for stimulation of mechanoreceptors is the neuroanatomical clinical outcome basis for the invention.