Ballet, Core & More Designed by fitness expert, Sharon Polsky. Personal support is always available by email Sharon directly at email@example.com. A Barre Program, based on the fundamentals of ballet. Requires no equipment other than a high-backed chair. Designed for women who want toned and sculpted legs, butt and core. 7 videos, each 20 to 35 minutes in duration. Each video is a stand-alone class. Choose the order and mix it up.