Harsh spotlights and street lamps illuminate a vicious brawl between two furious shirtless men as the screams of a crowd echo beneath a Bangkok underpass: Fight Club Thailand is on. In the capital city of a country renowned for its highly technical martial arts scene, amateur fighters gather regularly at a poor port-side neighbourhood and promise to exchange only blood and bruises in the underground club. "This is fighting by instinct. It's an underground fight and I think that's the charm of Fight Club," says Chana Worasart, the co-founder of Fight Club Thailand. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES