Sit on an exercise ball with your feet flat on the floor and core engaged. Slowly walk your feet forward while lowering your hips toward the floor, allowing the ball to support your lower back. Extend your arms overhead or let them relax toward the floor as you lean forward into a gentle stretch. Hold the position for 20–30 seconds while breathing deeply. Maintain a relaxed posture—not forcing the stretch—to help release tension in the lower back and hips.
Log your exercise ball back stretch sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.