My father was one of the first Tae Kwon Do Masters to come to the states in the '60s. He had one of the first all-African-American fighting teams, and I was basically raised in a karate studio since I was 3. It's part of my blood, competing, and all that stuff was responsible for a lot of me just growing up.
Whenever you're fighting with weapons, there's a level of reality because people don't understand that these are still metal or hard rubber with sharp points - that if the timing's wrong, you could definitely get hurt. There's nothing like working with an actor who doesn't know what they're doing, because you're always in fear of losing an eye.