Jeffery Duffy

Jeffery Duffy is a Gyrotonic instructor at CORE Morningside and CORE Ormewood Park with over 10 years of experience teaching the GYROTONIC® method. He is certified in the GYROTONIC® method and the Jumping-Stretching Board, and brings a refined, movement-informed perspective to every session.

A Juilliard alumnus, Jeffery approaches movement with both artistry and precision. His teaching is rooted in a client-first philosophy—listening carefully to feedback and tailoring each session to support the individual’s goals, abilities, and lived experience. Whether working with athletes, clients managing pain, or those simply wanting to keep moving well, he emphasizes sustainable strength, mobility, and fluid coordination.

Jeffery was drawn to Gyrotonic because of how profoundly it improved his own life—helping him feel better in his body without negative side effects. That personal transformation continues to inform his work today, as he helps clients move with greater freedom, resilience, and ease