there nothin much u can do by training
the only thing u can train on is din push ups
chin ups
sit ups and run
becaus the us marine corps is tought and watch out for the drill sergeants becauz they will rip u apart
the only reason y i kno this is becauz i go to a military school and i kno a retires first sergeant of the marine corps who
used to be a drill sergeant and he said that they treat theirin comers lik mini cooper and lik abused them to toughen them up
anyways
good luck