Proprioception is an automatic sensitivity mechanism in the body that sends messages through the central nervous system relaying information to the body about how to react to stimuli and with what amount of tension. The muscles, joints, and connective tissues contain specialized sensory receptors that enable the body to process the information and turn that information into action. The skin, palms of the hands, soles of the feet, and other senses coordinate together to communicate with the brain about muscle tension, weight shifts, load, and range of motion.