just a question for all you in-shape fuckers....after this semester i'm going back to jj. i haven't consistantly taken jj for a number of years and i know my overall physical health has decreased in these last couple years. i still run almost everyday at least 1.5 miles but i need to know cardio excersises that will help me out with fighting. i didn't think i was out of shape as much as i am until last friday when i played football with some friends. i was getting winded quick and on top of that, i've been sore as hell these last two days. and i remember, even when i was younger and in better shape, that jj use to tire me out like crazy. so what do ya'll suggest? sprints, what?