Be VERY careful here. See the stuff tamfb linked about LSU early in this thread and understand how much you have to cut back AFTER the contrast/overspeed-- and the after part is the key. Because of the contrast effect, the impact forces, and muscular and CNS loadings in this workout are extreme. You cannot combine this training with how you would normally train and expect to survive uninjured. But Dennis Shaver has a whole bunch of folks who argue strongly for what they’ve been doing.