Applied Kinesiology (AK) is a system that evaluates structural, chemical and mental aspects of health using manual muscle testing combined with other standard methods of diagnosis. AK, a non-invasive system of evaluating body function that is unique in the healing arts, has become a dynamic movement in healthcare. Muscle testing allows the doctor to prioritize what your body needs in any given moment, whether it be a chiropractic adjustment, supplementation, emotional clearing, muscle work, or balancing meridians.