Jackie Chan's Real Fights
"At a welcome party In Portland, Oregon, a male approached and asked for a duel . Being a guest at the party I refused his request. This guy, rather cunning, was seemingly disappionted and wanted to shake my hand goodbye. Once our hands grasped I could feel his seizing force and I knew I was trapped. I immediately moved my legs into a defensive position. In fact that guy was pretty strong with his grasp.
I gripped his viens to lower the blood circulation, and his force gradually turned weak. While I was about to free my palm I saw him raising his left fist. I instantly grasped his thumb and commanded his wrist. At that point he could make no move."