A thousand years ago, I trained briefly with some Green Beret types for college ROTC. They taught a small variety of what they called "two-second-kill" techniques, some for bare hand but most with knives, and preached that if you were still fighting after three seconds you endangered yourself and your companions.

I remember only a little of that training - except the initial fear I felt trying to learn it - and cannot imagine those techniques legally defensible in most situations or appropriate for mass consumption.

My couple years of judo training, however, especially the mat and grappling moves, might find appropriate defensive use in the real world. There was a lot of emphasis on safe-falling and hold-breaking.

At this point in time, I know my preparation for physical self-defense is almost non-existent and I have been thinking about changing this. Hence this thread.