Well, someone I used to hang around when I was in middle school told and shown me some relatively basic (but sensible) Taekwondo principles...he was I think a blue belt in it and I was 13 and it was all mixed in with messing around swinging sticks. So no, I do not know martial arts. I was never too drawn to them. I think if I were to try to get into it, it would be the HEMA route honestly.