![A prisoner performs a "wai khru", or warm up, before a fight at a boxing competition in Nonthaburi prison near Bangkok. A prisoner performs a "wai khru", or warm up, before a A prisoner performs a "wai khru", or warm up, before a fight at a boxing competition in Nonthaburi prison near Bangkok. A prisoner performs a "wai khru", or warm up, before a](https://c8.alamy.com/comp/2D39XAD/a-prisoner-performs-a-wai-khru-or-warm-up-before-a-fight-at-a-boxing-competition-in-nonthaburi-prison-near-bangkok-a-prisoner-performs-a-wai-khru-or-warm-up-before-a-fight-at-a-muaythai-boxing-competition-in-nonthaburi-prison-near-bangkok-february-28-2005-this-is-the-first-time-a-muaythai-boxing-competition-has-been-held-in-a-thai-prison-reuterschaiwat-subprasom-2D39XAD.jpg)
A prisoner performs a "wai khru", or warm up, before a fight at a boxing competition in Nonthaburi prison near Bangkok. A prisoner performs a "wai khru", or warm up, before a
![Gilles Simon of France (L) practices Thai boxing, also known as Muay Thai, with Olympic gold medallist boxer Somjit Jongjohor (partially obscured) in Bangkok September 30, 2009. Simon is in Bangkok to Gilles Simon of France (L) practices Thai boxing, also known as Muay Thai, with Olympic gold medallist boxer Somjit Jongjohor (partially obscured) in Bangkok September 30, 2009. Simon is in Bangkok to](https://c8.alamy.com/comp/2E8CN2T/gilles-simon-of-france-l-practices-thai-boxing-also-known-as-muay-thai-with-olympic-gold-medallist-boxer-somjit-jongjohor-partially-obscured-in-bangkok-september-30-2009-simon-is-in-bangkok-to-take-part-in-the-thailand-open-tennis-tournament-reuterschaiwat-subprasom-thailand-sport-tennis-boxing-2E8CN2T.jpg)
Gilles Simon of France (L) practices Thai boxing, also known as Muay Thai, with Olympic gold medallist boxer Somjit Jongjohor (partially obscured) in Bangkok September 30, 2009. Simon is in Bangkok to
![Former world heavyweight champion Riddick Bowe (L) of the U.S. and his Thai trainer practise during training in Bangkok May 28, 2013. Bowe, 45, will fight for his first Muay Thai (Thai Former world heavyweight champion Riddick Bowe (L) of the U.S. and his Thai trainer practise during training in Bangkok May 28, 2013. Bowe, 45, will fight for his first Muay Thai (Thai](https://c8.alamy.com/comp/2E65K9T/former-world-heavyweight-champion-riddick-bowe-l-of-the-us-and-his-thai-trainer-practise-during-training-in-bangkok-may-28-2013-bowe-45-will-fight-for-his-first-muay-thai-thai-boxing-match-against-levgen-golovin-of-russia-in-the-eastern-beach-town-of-pattaya-on-june-14-reuterschaiwat-subprasom-thailand-tags-sport-boxing-2E65K9T.jpg)
Former world heavyweight champion Riddick Bowe (L) of the U.S. and his Thai trainer practise during training in Bangkok May 28, 2013. Bowe, 45, will fight for his first Muay Thai (Thai
![Tennis player Benjamin Becker of Germany (R), poses with Thai boxer Somluck Kamsing, who won the Thailand's first Olympic gold medal when he switched to amateur boxing in 1996, in Bangkok, September Tennis player Benjamin Becker of Germany (R), poses with Thai boxer Somluck Kamsing, who won the Thailand's first Olympic gold medal when he switched to amateur boxing in 1996, in Bangkok, September](https://c8.alamy.com/comp/2D2KY85/tennis-player-benjamin-becker-of-germany-r-poses-with-thai-boxer-somluck-kamsing-who-won-the-thailands-first-olympic-gold-medal-when-he-switched-to-amateur-boxing-in-1996-in-bangkok-september-26-2007-reuterschaiwat-subprasom-thailand-2D2KY85.jpg)