Massage Theory

According to the theory of the door control, a back massage probably reduce your pain by physical
causing:
A) the release of pain-relieving endorphins in the brain.
B) the activation of nerve fibers in the spinal cord.
C) the awakening of your autonomic nervous system and the release of adrenaline in the blood.
D) disabling pain receptors on the surface of your skin.

B) activation of certain nerve fibers in the spinal cord.

The nerve fibers from all parts of your body (ships, mussels, organs, etc.) pass through the spinal cord to the brain and a decision is taken on what to do with the messages. Thats where massage is at stake