With the exception of the "digging out of the grave" stuff, the conditioning methods are very realistic. I was trained in something similar with sandbags, boards and bricks (sans the punching through them). But with 4 sections of the hands: 1- spear hand fingertips 2- fore knuckles 3- center knuckes 4- point of wrist I had to do with at least 50 times each hand on different surfaces, "1,2,3,4-1,2,3,4", over and over again. After training like this, you can virutally punch any surface w/o any real fear. However, you need linaments to prevent prolonged damage on your hands.
