This book HOLD, outlines a set of muscle testing procedures that can help a chiropractor in his day-to-day evaluation of patients' conditions. The protocol described stemmed from the author's need to assess the progress of his patients during the period of treatment. It is important to know what needs to be done today and what should be left alone to heal. What a patient says about his condition or progress can sometimes be misleading, the chiropractor needs to know the real situation. Muscle tests can, if done properly, get to the truth of the matter, quickly and easily. These tests do not replace a diligent examination, especially with a new patient or a patient who has returned with a new condition. They are a complementary additional tool in the toolbox and can sometimes lead the practitioner to an otherwise missed condition. The author has used these tests for the last thirty years, he uses them on every patient every visit; he does not claim to have invented muscle testing, but has learnt from others along the way. SOT and AK have been particularly helpful. This is a book that every chiropractor should have as a reference and as a useful tool. Doctors who are new to muscle testing will find the descriptions of each test easy to follow and if used, to be a useful addition their daily routine.