Swiss Ball Butt Blaster
An excellent exercise for both the glut and lower back muscles.
Lie on your front on a bench, wrapping your arms underneath in order to pull yourself tight into the bench, to help protect your back.
With your legs extending back, grasp a suitable sized Swiss Ball, between your feet, squeezing the ball together using your inner thigh muscles.
Smoothly raise the Swiss Ball in a slow controlled motion, keeping your legs straight focusing on using the muscles of your glutes to lift and lower your legs, rather than simply bending at the knee.
Avoid letting the Swiss Ball bounce off the floor and aim to keep your hips and upper body in contact with the bench throughout the exercise to prevent over extending during the lifting phase.