Most common martial arts courses in CC are Wushu, Chen/Yang
style Taijiquan and TKD.
But I can tell you for Wushu, the skills learnt are useless, except
of the stances. That's only if you practised them.
For TKD, unsure. Never joined a class.
If you want those rare martial arts... then you have to search
around Singapore. NewAge has a compiled list, of which he has given
link.
