Mathew Polly is a leading writer of combat sports and martial arts books. His latest, Bruce Lee: A Life, is a page-turner biography on the 20th century's most famous martial artist. Our discussion with Matthew Polly covers his time training at the famous Shaolin temple, his transition into the world of MMA for his second book, "Tapped Out", and why Dana White is right to call Bruce Lee the godfather of mixed martial arts.