You can learn it too..If you learn angam..
But You have to train more than a year. or two..depends on how good you are..
They basically don't teach ''nila'' to new students cuz you know.. they're gonna show off in streets and all the stuff..
it's not easy 2 learn it man.. infact they don't give it out these days.. n it's not smethin dat u can learn in 1 or 2 yrs.. cos it's not lyk da typical martial arts u find..