Muscle testing, also known as Nutrition Response Testing or applied kinesiology, is a non-invasive diagnostic method used to assess the body's nutritional deficiencies and sensitivities. By evaluating the response of specific muscles to gentle pressure while testing mapped reflex points, practitioners can identify imbalances and create individualized nutrition protocols. Muscle testing helps pinpoint foods, supplements, or environmental factors affecting a patient’s vitality. This approach is often used alongside symptom assessments, health questionnaires, and laboratory tests for a well-rounded picture of the patient's health status. The technique allows for targeted recommendations and frequent fine-tuning, helping patients achieve better health by addressing issues at the root and monitoring progress over time.