She uses a private trainer. She doesn t go to a regular gym any more -- which leaves her neighbors unhappy because the dance-oriented workouts are noisy:http://www.huffingtonpost.com/2009/10/17��Her trainer was Tracey Anderson, but not any more:http://www.thedailybeast.com/blogs-and-s��
She does yoga in her own gym in her apartment.
If I had to guess, I would say she fits in with the crowd in Tribeca and Soho.
You really think a woman who can afford just about anything in the world would go to a public gym??? LMAO