"From the first day I started learning self-defense, I began modifying ... like a defensive push kick, driving your heel into the attacker. Turn the shoe into an improvised weapon.

That's what you should learn self-defense for. Obviously ... Jocko Willink: If someone attacks me and they want to punch or kick me, I can just run away. They're not holding onto me.

NEW YEAR'S SAFETY: SELF-DEFENSE EXPERT SHARES TIPS TO SURVIVE ... in which "purely primal survival instincts" kick in, according to Gracie. Even when this occurs, he said, jiu-jitsu will still ...