I have been doing martail arts since i was 8 years old I am now eighteen I have been in boxing, BJJ, TKD, karate and I have messed a round with a few other fighting styles. All of that sounds pretty good only one problem at 14 I started smoking on and off but I lost a family meber and started smoking again for about a year and i now need to get back into cardio like running more then like a hundred or so feet then stopping , All I am looking for here is some tips on how to build back up my cardio after all this smoking. and then any tips you may have for training also i live in vegas so perfect place for the ufc