I have done a very similar video to this before about maximising the thrust in the reverse punch (gyaka zuki) as used in Karate and similar styles.  This time however, I wanted to take it a bit further by adding a sliding step, which is a very useful and powerful technique from both competition and self protection points of views.  It moves the body weight forward further and even more rapidly giving a lot of acceleration, impact and covers distance in a very deceptive manner. Read more