Hula-Hoop lessons in D.F.? (Mexico City)

Hello everyone!

Well, I would like to ask you if you know of any place where I can learn how to Hula-Hoop in Mexico City. It seems like a great way to exercise, quite practical, and plus it looks awesome! I looked it up in google, and I found a couple of places, but one seemed to be more for circus-training and stuff; the other seemed like a good idea but the teacher never answered the phone, wrote me a very brief email confirming my assistance but failed to give me an address! :P

I'd really appreciate any help :) I really wish to hula-hoop! Oh, and where to buy the hoops? Or should I try to build one myself?

¡Gracias! =) have a great day,

Rob