Applied Kinesiology is a system of evaluating how the body reacts to various forms of stimuli applied to the nervous system, or to simply state, "functional neurology". "AK" was founded in 1964 by Dr. George J. Goodheart, and encompasses the idea that the body is a self-maintaining and self-correcting mechanism, given the chance. When health is lost, something is interfering with the body's ability to process and handle various stressors, leading to accumulation, sickness, and disease.
"Muscle testing" is a technique used to determine not the actual strength of a muscle, but rather how the nervous system controls it.
Applied Kinesiology is non-invasive, and a great examination and diagnostic tool to examine the human body and interconnecting systems. It provides a simple way of identifying adrenal fatigue, allergies, organ dysfunction, digestive disorders, nutritional deficiencies, as well as emotional stressors, and can provide treatment protocols to restore a balanced system.