I practice the punch with a punching-mat (tied on the steel-pilar). And I also learned the differences beetween a common punch (using muscle-power) and the Systema punch. They produced different sound after the punch. The common one only sound the contact and pressing the mat,.. but the Systema punch sound both the mat, and at the same time the steel which is echo-ing. First time I practiced this, my wife run to the 3rd floor (my trainning area) and told me she heard a loud-echoing sound.. and we found-out that the sound is from the punch when it is executed right. The exploding-penetrating-power from the puch in systema (prooved by the sound from this video) will give us a bit picture how will you feel when you get one, like the balistic-strike from Val. I am just a beginner in Systema,.. and love it so much.