Gonna be living at this place for the next week, it has 5x5m swimming pool and a 50m long "hill" - well it's just a pretty steep way from the gate the place to the house. I've never done any conditioning, although because I'm always late for school, I run 400m, and after I get out of the bus, I run 400m again - pretty much every day, or at least I did before summer started, I'm pretty sure I could have run a 400m in 60 seconds or a bit more, before I gained 30pounds. So hopefully I'm not bad, but I don't remember the last time I ran a longer distance than 800m. I've also done 100burpees in 9minutes quite some time ago, but I'm heavier in worse shape now, so it would probably take like +-14 I guess. My goals for conditioning are to be able to stay fast, explosive for 5 minutes straight in bjj, and to be able to again go those 5 minutes, after I rest for 5 minutes - 5mins rolling, 5mins rest intervals. I will have loads of time, but I have no idea how much I should run, if I should even bother running such a small distance, or if the swimming pool will actually be useful for anything besides cooling down. I was thinking I would run up as fast I can, and then quite slowly jog down, repeat like 15times? Or should I just run as many as I can within 6minutes, then rest 4, repeat? I just have no idea how much I should run for the best results. Is there really such a thing as over training when you're training your conditioning, shouldn't I just do as many as my will is up for (which probably won't be that many anyway) ?