Free documentaries and the best books behind them.
The Best Boxing, MMA & Martial Arts Documentaries
Sport - 13 free documentaries about boxing, mma & martial arts.
Start with I Trained Like a Muay Thai Fighter for 14 Days (32 min, National Geographic), then Turning Pakistan's Street Kids Into MMA Fighters (38 min, VICE). All 13 documentaries here are free to watch from their makers' official uploads. To read deeper, the top-rated book on boxing, mma & martial arts is The Greatest by Muhammad Ali.