Difficulty Level: Intermediate
Muscle Groups Worked: Abdominals
Equipment: Bodyweight Only
Movement: Start by lying on your back with your arms by your sides and your palms facing down. Extend your legs fully with a slight bend in your knees. Lift your heels about 6 inches off the floor. Make small, rapid cross scissor-like motions as you hold legs to about 45 degrees into the air.