Wellness -- helping people get well and stay well! Dr. Evans also specializes in Bio Cranial System, a non-force, whole body system of healthcare. This procedure (called a correction) affects the entire cranium, spine and nervous system. Since the nervous system is the major controller of all functions of the body, all functions are improved. Oftentimes, there is a dramatic change right from the first visit. There is no popping, snapping or twisting with Bio Cranial.