<Tr> <Td> </Td> <Td> Special Warfare insignia </Td> </Tr> <Tr> <Td> </Td> <Td> Navy and Marine Corps Parachutist Insignia </Td> </Tr> <P> Willink is an avid Brazilian jiu - jitsu practitioner and received his black belt from Dean Lister . Willink also owns Victory MMA and Fitness in San Diego, CA and often trains and corners professional fighters . </P> <P> Along with Leif Babin, Willink formed the company Echelon Front, which offers "practical, experience - based solutions to complex problems based on our own lessons learned through a myriad of dynamic leadership challenges ." Based on their careers in the United States Navy, he and Babin co-authored the leadership manual Extreme Ownership: How U.S. Navy Seals Lead and Win . After appearing on the podcasts of Tim Ferriss, Joe Rogan and Sam Harris to publicize his book, Willink started his own weekly podcast, The Jocko Podcast, with Echo Charles on December 22, 2015 covering topics from war, leadership, jiu - jitsu, exercise, and lessons learned as a Navy SEAL . </P>

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