This is a basic tool used by the homeopathic practitioners to conquer pain.  Homeopathic substances are non-toxic and used in a minute quantity.  It is also a form of energy healing.  An MD is starting to teach some homeopathy at the medical school in Richmond.  Some MD students there got to learn about and experience some biofield therapy within the last 20 years.  A nurse practitioner trained with other holistic studies was the instructor.  I also learned with her and worked as her helper in some of the Richmond biofield classes – not at the medical school.