It’s a popular fitness channel run by Jeff Cavaliere, a former head physical therapist and assistant strength coach for the New York Mets. The channel focuses on science-based training techniques, injury prevention, and proper form—often emphasizing anatomy and biomechanics.
Jeff is well-known for his clear demonstrations, evidence-backed advice, and no-nonsense approach to fitness. Many people trust his content for workouts, posture correction, rehab exercises, and strength training tips.