Currently training pure Boxing and having a sorta amatuer fight next month( more of an exhibition) for 3, rounds of only 1 minute. Anyway. I'm 165 pounds at 6 feet. Pretty thin lean guy and have always been. My weight goes up and down between 155 and 170. I never have been fat my whole life. Question is does anyone else eat junk food and train? I eat pizza, burgers, Chinese buns( live in Chinatown). I gain little to no weight and don't really feel any different in training then when I eat healthy. I don't eat it everyday. Should I avoid it altogether?