How To: Using a barbell that is secured on one end to a device to prevent from moving, grab the free end in both hands as shown. Begin to twist to one side while lowering the barbell and pivoting. Make sure knee always follows the direction of the foot. Keep arms straight and think about crunching your obliques.
Performance: To perform complete 20 on each side.
Muscles Used: Shoulders, Traps, Obliques and Rectus Abdominus