Side Plank Demonstration | Core, Hips & Spine Support Side plank is more than a core exercise — it’s functional movement for spinal stability, hip strength, and balance as we age. This posture strengthens the obliques, shoulders, and glute medius while training the body to stabilize in everyday movements like walking, standing, and reaching. In this demonstration, I show: • Proper shoulder and wrist alignment • How to protect the lower back and neck • Modifications for beginners and aging bodies