STARTING POSITION:
Lie flat on your back with your feet raised in front of you on a fitball. Your knees should be around 90º. Place your arms at your sides on the floor. Contract your pelvic floor and core.
MOVEMENT:
Rolling the fitball move your knees together towards the right side. Make sure you don't move your shoulders. Return to the starting position in a smooth movement and move your legs towards the left side.
TIPS: Focus on slow and controlled movement.