RE: what does
Plyometric is the latin phrase for "dear lord in heaven, Cathe's trying to kill me"
Seriously, I don't know what it actually means, but all of her plyo-moves are slowed-down versions of typical cardio moves, with each component of the move being done more intensely. For example, instead of doing a quick jumping jack (regular cardio move), you jump out, squat deep, jump in, squat deep (plyo-jack). The moves generally entail some form of deep squatting, and general frying of the lower body muscles.
Sandra