Oliver Staark

Zen Jiu Jitsu : Champions Mind: Battle Tested Psychology For Unstoppable BJJ Performance

Zen Jiu Jitsu - Weight Cutting for BJJ: The 4 Week Weight Loss Action Plan for Training BJJ. The Easy Button to Lose weight and keep it off for good. Cutting edge nutrition, and great health

Zen Jiu Jitsu - Over 40: Age is your Edge : The Strategic Path to BJJ Success

Zen Jiu Jitsu: Over 40 (Unabridged)

Zen Jiu Jitsu: White to Blue (Unabridged)

Zen Jiu Jitsu: Champions Mind: Battle Tested Psychology for Unstoppable BJJ Performance (Unabridged)