Any ancient medical system can not survive this long unless it is effective, so what are its strengths? Surely it is its efficacy! TCM views the human body as an organic whole with a network of meridians connecting and coordinating the internal organs, Qi (“vital energy”), blood, body fluids, muscles, bones, tendons and the skin. TCM also holds as its central belief that health in all parts of the body is due to the relative dynamic balance of fundamental energies – Yin and Yang. Yin Yang theory forms the basis of TCM’s holistic approach to health and disease and also offers practical guidance in the prevention and treatment of illnesses. In TCM, Diagnosis is based upon how a person reacts to the causes of disease, with influential connection of his/her constitutional condition, internal and external environmental factors, etc. For example, a flu virus may cause fever, sore throat, headache in one, but shivers, running nose and body aches in other. Therefore, patients with same flu viral infection can be diagnosed as different “syndromes” in TCM.