The handstand to planche eccentric is a high-level transition that builds extreme shoulder strength. Start in a stable handstand. Gradually shift your weight forward by leaning your shoulders past your wrists while simultaneously lowering your legs. The key is to keep your arms completely locked out and your elbows straight. Maintain a hollow body or straight line position with your core fully engaged. Control the descent as slowly as possible until you reach a horizontal planche position. Ensure your scapulae remain protracted (pushed apart) throughout the movement.