The top box in the stack is either a 36- or 42-inch plyo box. If you have either one, please put them away. In fact, unless you are training some great athletes, put your 30-inch box away too. I have dubbed the big plyo boxes “Idiot Boxes”. Idiot boxes are jumped on by young men (it is always young men) looking to show off.
I have begun to refer to them as “skin donors”. I can tell you something for sure. If CSI showed up and dusted the high plyo boxes for DNA most of these boxes would test positive. There was a time when my athletes and I were foolish just like everyone else and did these foolish exercises. After coaching a few “skin donors” I realized that what mattered was the movement of the center of mass, not the height of the box. I no longer own a 36-inch box but, I own lots of 18’s, 24’s and a few 30’s. Our rule is simple. Jimmy Radcliffe said it best; “jump and land from the same position”. This means that the take-off and landing should look identical. If you jump from a ½ squat, land in a half squat.
I could post a few videos but, don’t want to get sued. Just YouTube “box jumps” if you want to see foolishness in action.
Remember, jump and land from the same position.
Michael Boyle, MS, CSCS, ATC is a former strength and conditioning consultant with the Boston Red Sox and founder of Michael Boyle Strength and Conditioning – http://www.bodybyboyle.com/