You will need a flat bench to perform this exercise. It is a great workout for your lower abs and also for your legs.
Lie on a flat bench. Put your legs straight out. Legs are off the bench end. Your hands are placed under your butt and your palms are facing down.
Bend your knees and pull your upper thighs into your midsection, and then slowly return to the starting position with your legs straight and off the bench end.
Breathe in when you return to s