Just wanted to give a thumb's up to Koko Fit Club. I think the owner now as three locations in the metro. I use the Edmond location, and it is really enjoyable and efficient. Go in and give their system a try (for free).

Website: Koko FitClub : World's Best 30-Minute Workout

Disclaimer: I have absolutely nothing to do with Koko, other than being a customer!