Want to get the best overall workout and have a great time while doing it? X-ball is an extremely intense game loosely based on the rules of volleyball, but played with a medicine ball, and instead of hitting the ball, you catch and throw it back over the net. Pretty simple, right? If you like Crossfit, you'll love this. It provides a fun and competitive way to get a full body, dynamic workout. From fat burning and cardiovascular fitness, to core strengthening and explosive power, this game/ training provides it all.