STARTING POSITION:
Find a fitball and lie it on your back. Place your heels on the fitball with your legs fully extended and your toes facing upwards. Place your arms extended on the floor with the palm of your hands facing down. Contract your pelvic floor and core.
MOVEMENT:
Using your glutes and squeezing your abdominal muscles, extend your hips until your body draws a straight line. Maintaining the balance, slightly raise your right leg. Return to the starting position and repeat the movement with your left leg.
TIPS: Don't let the hips go down.