Ariel_yu on Instagram: "Donkey Kickback Key Points 1. Setup: • Position your hands directly under your shoulders and your knees under your hips. • Keep your shoulders down (avoid shrugging). • Slightly protract your shoulder blades to stabilize your upper body. 2. Core Engagement: • Tighten your core to prevent your lower back from over-arching. • Maintain a neutral spine throughout the movement. 3. Execution: • Drive the movement from your glutes, not your lower back. • Kick your working leg st