So I spent the day staring at this blasted box that my dear husband built for me. I have achieved the 20" box jump at CFW (CFW is CrossFit Woodbridge). Last Saturday, in fact. I worked up to it by jumping on a progressively taller stack of 45lb weights, then onto the box. Then I did several more. The box I used originally is the shape of a trapezoid. It's amazing that my mind can convince me that a rectangular box was a different thing. It isn't. So today I went to CFW, and while the kids were having their class, I worked on box jumps using a box that was proportionately identical to mine. I did it. Now I really have no excuse!