Callahan Techniques® Thought Field Therapy is a natural, drug-free approach with rapid results that can be documented with Heart Rate Variability measurements. Callahan Techniques® training is offered to professionals in the energy healing and alternative medicine as well as traditional healthcare fields. We recommend that anyone with medical problems obtain the advice and treatment of a licensed medical doctor. Also, if a reader would like to try our procedures we strongly advise that he or she continue to get the opinions of their licensed physician. It is important to have a knowledgeable doctor who is familiar with you and your problems.