Cambodia has fewer opportunities for language and cultural studies for the short-term traveller, though there are many language schools and private teachers advertising for those who are hanging around a bit longer. There are also meditation groups which meet at some of the Buddhist Pagodas in Phnom Penh.
Paddy's Gym, close to the Japanese Bridge in Phnom Penh offers kickboxing lessons, and the owner can tell you about Pradal Serey - Cambodia's answer (and, it is claimed, precursor) to Muay Thai!