Hello, I'm new to the forum and new to traditional martial arts. I'm about to start my Taekwondo journey and I was curious as to which martial arts would compliment or blend nicely with my TKD training? Is it smart to train in something concurrently with TKD or should I wait till I reach first dan in TKD before I cross train in something else that compliments or blends well with my TKD? I wont stop training TKD when I reach first dan by any means. I see first dan as being the beginning of my journey. I just want to study other arts as well especially ones that blend well with TKD. A little about me.... I have played sports my whole life, high school football, college football, Arena football, and boxed amatuers, competed in amatuer MMA and submission grappling tourneys about 8 years ago. I'm now 30 years old. Thank you for any advice guys!