The human body is an amazing thing. It is intricately innervated with nerve endings designed to let you know when your body is under various forms of stress or localised pain. The brain (or spinal cord) receives a signal then instantly responds by sending messages to the body to react accordingly. This reaction is typically a rapid movement away from a pain source. This evolutionary role of nerves and the brain play a role in human survival and has done so for centuries. This physiological ph...
