my wife does nia once a week. she seems to like it, but i am not too sure how much matial arts of any sort there is to it, more like yogaerobics, with plenty of music. one of her favorite classes is the annual Moullon Rouge night.
seems great for ladies, or a great way to meet ladies. it is certainly a great exercise class, if a touch over-sold imho...but what practitioner does not oversell their own system?
my first Chen tai chi class was held in the room above the local Nia studio. they used to get mad at us for buddha-stomping....
Only love can break your heart, but one good hidden fist can cave your chest in.