Five Levels of high-intensity, cardio-forward drills outline Equinox’s new music-driven workout class by fitness guru Christa DiPaolo: The Cut. .“The Cut is both fun and effective,” says the class’ originator. “We wanted to create a format that was non-intimidating and that used minimal equipment, while keeping the integrity and authenticity of the sport.” The Cut is part of the fitness club’s growing list of master-taught group sessions that push its members to physical extremes while retaining an intoxicatingly fun atmosphere.