Maggie's Farm

Plyometric calisthenics entail more-or-less explosive, usually full-body, movements.  Other examples might be jumping burpees, donkey kicks, jumping lunges, high-box step-ups, high wall-balls, and squat jumps. 

As I become fitter, my ability to do box jumps is improving. I am now able to do a good series of 18" box jumps. The young athletes I see get much higher. Although these are muscle- and agility-training exercises, they are also HIIT cardio. 15 box jumps gets my heart pounding through my chest. (My gyms use soft boxes, to avoid bleeding shins. Crossfit uses hard boxes, of course.)

The beginner basics: