The one-leg circle exercise in Pilates lengthens and strengthens the leg muscles. Learn to do the one -eg circle Pilates exercise with tips from a fitness trainer in this free exercise video. Expert: Carol Ann Contact: www.StudioGroupX.com Bio: Carol Ann, known as the trainers’ trainer, has 19 years of professional fitness training experience and holds a master’s degree in exercise science and health promotion. Filmmaker: Christopher Rokosz