The reverse leg raise on Swiss ball is a single-joint exercise that strengthens the glutes. It also enhances balance and the synergy between upper and lower body.
Lie facedown on a Swiss ball with your arms extended and hands on the floor. Your hips should be positioned on the ball and your body should form a straight line from your shoulders to your pelvis. Your toes should be touching the floor.
While keeping everything else immobile, lift both legs in the air using your hips and glutes. Pause at the top, then slowly lower your legs back to the starting position.
Do not hyperextend your lower back at the top of the repetition.