S&S Express Day 15: Plyo Pronto

Jump day. after 5-6ish hours of sleep, we were back in action for speed plyometrics or plyo pronto as we're calling it. Plyo pronto is when you skip past all of Tony's demos and talking and just bring it. I think we were still zoned out because besides the occasional $*(@! and #@*)!$ being uttered, we were quiet and just getting through that video like it was nobody's business. Sariah wants to know what does the circle run actually work out? I mean it's quick movement - and I'm guessing it works on your agility in a way but what else does it work body-wise? all you p90x grads, trainers, etc - please weigh in. we wanna know!