Follow These Steps:
Step 1. Begin by hanging from a chin up bar with your arms fully extended above your head and using a medium grip.
Step 2. With both legs hanging, slowly raise both legs together and in towards your abs while keeping your torso from rocking. Be sure to blow out the air (exhale) as you crunch your abs.
Step 3. Return to the starting position and repeat to complete your sets.
Primary Muscle: Abdominals