Supine Hip Extension on Swiss Ball

Start: Lie on your back with your legs straight on a Swiss ball. Your arms should be at your sides, externally rotated.

Movement: Squeeze your glutes, lifting your hips off the floor toward the ceiling. Keep your legs straight and your core tight. Raise your hips until they form a straight line from your shoulders through your hips and knees to your ankles. Lower to the starting position
and repeat.