Saw this today...they will be going in the long-vacant Mervyn's space on the west side of Promenade between JC Penney and Macy's. Good to see this space being filled, and good for midtown to have such a nice fitness center. The one at 101st & Sheridan is really nice.
http://www.tulsaworld.com/business/article.aspx?subjectid=46&articleid=20110411_46_0_Itwill698450 (http://www.tulsaworld.com/business/article.aspx?subjectid=46&articleid=20110411_46_0_Itwill698450)
They don't pay their bills at the current one, either that or they pay their rent by stiffing contractors. Not good people to do business with.