Principles Common to Both Qin Na and Ground Fighting
September 30, 2013
A lever is the simplest of machines, which utilizes a rigid bar to rotate around a fixed pivot point called a fulcrum in order to exert force on an object (load). If the resistance or load exceeds the strength of the bar, the bar will break. Biomechanically speaking, the arm is a bar, and when the fulcrum is at or above the joint, breakage can easily occur.
In-Group, Out-Group: Two Sides of a Hot Issue
December 5, 2011
As both a military policeman during the Vietnam War and as a civilian police officer for 25 years, I was involved in dozens of demonstrations and all-out riots.