Never Underestimate An Old Man With A Black Belt Jiu Jitsu Wrestling Mixed Martial Arts Sports Funny BJJ MMA Journal Notebook Keep track of your jiu jitsu or martial arts progress and favorite chokes and grappling moves with this cool funny journal. Perfect for keeping notes and monitoring your progress, which will help you upgrade your jiu jitsu routine, and ultimately help you get your black belt. A great gift for mixed martial...