One of the most difficult things when trying to train pretty much anything is that the human organism, in fact all organisms operate with a profound sense of homeostasis. When the system finds its equilibrium it sets its internal thermostat to stay there. The human body regulates its temperature to fall within a certain zone, ideal for its chemical interactions. The alcoholic (just to pick something) stays within the circularity of habits that maintain a symbiotic relationship to the substance a