Some groups do timed running for 10 minutes, some are more laid back and don't time running, or are by the number of times of runs instead. And different kinds of running, like skipping, backwards, straight jumps, etc. Then warm-up with stretching. The run is good to warm up your muscles and help you stretch. Leg kicks are good for warm-up too. In school they tell us to warm up by stretching first and then run to not pull anything. lol Well, this is kinda different. :D