National Geographic: Fight Club Asia (2013)

Fight Club Asia is a fly on the wall documentary that goes inside the world of Thailand’s Muay Thai fight clubs and follows some of its toughest fighters into the ring. Fighters come from all walks of life. Each has a different story but as they lay their aching bodies down each night they all share the same dream – fame and fortune. Follow three ambitious characters and their trainers as they prepare for their next big tournament, stepping into the ring at poorly lit car parks and huge arenas.
http://natgeotv.com/asia/fightclub/about