True Believer Jiu Jitsu recently partnered with Big Brothers Big Sisters of Greater Pittsburgh to share in the gift of friendship and spread positivity through the sport of Brazilian Jiu Jitsu. The event took place at True Believer Jiu Jitsu in Lawrenceville, where a group of 19 mentors and mentees from Big Brothers Big Sisters came together with volunteers from True Believer to learn about the martial art.