i thoroughly enjoyed this workout, as it had me moving and SWEATING. and i mean, SWEATING. fyi- plyometrics is also known as "jump training", learn more here: http://sportsmedicine.about.com/cs/conditioning/a/aa062701a.htm
my only issue was not that my muscles couldnt keep up, but that my conditioning was crap. i was completely out of breath with 20 min remaining in the workout. i also found out my core muscles were lacking tho, especially around the hip area. but this, just like chest & back, was INTENSE. have not sweat like this in a long time. it felt REALLY good. hopefully i can make it through the entire workout next time.