Cross country switch jumps are a great way to get your heart rate up and to use a BOSU, because it's kind of fun and bouncy. So what you're going to do is, you're going to put one foot in the middle of the BOSU-ball, and you're just going to jump switch. But you want to do it a little bit faster, so you're just going to keep jumping and switching. Just push off with that front leg, so that you get some height. Then if you want to make it more intense, you can add weights to that. So bring the weights into your hands and then you're going to just jump, switch. Then an even more advanced move is to move your arms up and down at the same time. So you're going to bring them up, opposite arm comes up to the opposite leg.