Kim Cattrall of "Sex and the City" has revealed in a recent interview that she has a new health obsession with physiyoga.

In an interview with The Times, Cattrall says the hybrid classes of physiotherapy and yoga, or "fizzy yoga" as she calls it, "saved her life" while she's been working on her new play.  The yoga-enhanced physiotherapy is a mix of massage, meditative breaking, physio adjustments, and yoga, according to the Daily Mail.

Cattrall is so obsessed with the new exercise that she asked her New York based physiyoga teacher to find her a new professor in London, before she agreed to be in Tennessee Williams "Sweet Birth of Youth," showing at the Old Vic.

"As I get older, I find that cardio is less important to me," Cattrall explained. "What I want to do more of is intense stretching."

"I'm not worried about injuring myself because a regular yoga instructor isn't versed in the way of the body like a trained physio is," she added.

During her "Sex and the City" days, Cattrall was very much into heavy cardio.  "I'd do massive sessions of heavy cardio before each series started and then no exercise at all during filming," she said. "I'd just collapse at the weekends."

Now, Cattrall just does two hourly sessions a week with her London instructor Helen O'Neill, and even credits her with "saving her life."  During the three-month run of play, she has suffered from a sore right knee, stiff sacrum, and "bruises bigger than a professional snowboarder."

Cattrall has even asked O'Neill to move to New York, but O'Neill is in the process of developing her practice, Fix, which opened in June.

"I want to keep it in good shape not just for health reasons but for work," Cattrall explained.  She's even Tweeting about her yoga studio:

 

Cattrall, who turned 57 today, is looking great!