Stability Ball Cross-Leg Crunch

Instructions

Steps : 1.) Start by laying flat on your back on an exercise ball, with the ball underneath your upper back region. 2.) Keep one of your feet firmly on the floor while the other is crossed over the planted one and place your fingertips behind your head opening up your elbows in the process. 3.) After gaining your balance, sit up squeezing with your abdominals. 4.) Return back to the starting position and continue your repetitions on that side before switching over to the opposite side and finishing up the rest of your reps and sets.