MAURICIO DIAZ From Central America, to south America, to Italy, to the UK and recently back to America. Based in Denver, Colorado. USA. Holder of 3 Black Belts in different martial arts, undisputed national amateur martial arts champion for years. Former mixed martial arts fighter. Former fitness, hand to hand combat and tactical instructor for the Army and Police special response units in Central America. Currently self defense and fitness/calisthenics instructor. Being self defense what holds his main focus, but in the end it´s all part of the same.