I've never boxed but am reasonably fit and do the usual running / cycling / swimming / gym for fitness. A guy in my triathlon club is seriously dedicated to Ironman and posts some good times but also goes to a boxing gym for fitness for the last couple of years. He has done a few white collar fights and was telling me the fitness in boxing was indescribable. 30 seconds felt like 3 minutes etc. What type of training helps you in beginner level / low level white collar boxing? How do you describe the fitness needed (apart from actually doing it). Is it sprint training or hill sprints? He also said getting hit in the face doesn't really hurt with the gloves on, but that your legs go. I appreciate the truly heroic fitness levels of pro boxers, but as I know how fit this guy is, I was surprised with what he said. I get that fitness is sport-specific but define boxing fitness and the types of training you can do to get box-fit?