Have you heard of Krav Maga? It's a type of military self-defense developed for the Israel Defense Forces
I have heard of it.  I have always wanted to try it.  Have you?
Yeah, I've been reading about how it focuses on efficiency and real world usefulness, it makes me really want to try it out
Is it a hard skill to learn?
Well, the original concept of Krav Maga was to take the most practical techniques of other fighting styles and make them more teachable, so it may not be so difficult after all
Interesting.  What fighting styles were combined to form Krav Maga?
Well, originally it was European boxing, wresting, and street fighting