The jackknife Pilates exercise requires strong core muscles and good control over the neck and shoulders. Learn more about the jackknife advanced Pilates exercise with tips from a fitness trainer in this free exercise video. Expert: Carol Ann Contact: www.studioGroupX.com Bio: Carol Ann has 19 years professional experience and fitness training has a master's degree in Exercise Science and Health Promotion. Director: Christopher Rokosz ... Pilates exercises stretches workouts fitness ...
http://www.youtube.com/watch?v=Nji55KoL-Xk&hl=en
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