09/05/2026
The posterior chain—the interconnected network of muscles running down the back of your body, including your erector spinae, glutes, hamstrings, lats, and posterior deltoids—serves as the foundational support system for your posture, movement, and spinal health. While modern, sedentary lifestyles often lead to overactive front muscles (quadriceps and chest) and underactive back muscles, Pilates Reformer exercises provide a uniquely effective mechanism for re-engaging and strengthening this critical posterior network