Brian Marvin is a 20 year Active Duty Army Service Member, who currently owns an Operates Renzo Gracie Houston. He is the former President of the We Defy Foundation, which supports Disabled Combat Veterans therapy and fitness through Brazilian Jiu Jitsu. He volunteers with several Veteran and Law Enforcement Charities. .On top of being a such an inspiring person in the jiujitsu community, Brian is an outstanding leader and mentor. .Brian is taking things that he has learned growing ...