General Introduction to Mirroring Principle by Wim DeputterMirror your opponents attacks and stop them in their tracks with black belt Wim Deputters revolutionary BJJ principles Learn these little known BJJ hacks that will change the way you defend and escape bad positions Master the game changing mirroring principle that Wim Deputter has used to revolutionize his entire grappling game, a hidden BJJ hack that improves your defense and control in every position The mirroring principle is a fundamental movement