OBLIQUE CRUNCHES
for this exercise, lie on your left side on a padded surface, stack your legs, bring your right hand behind your head, and then lie your left arm in front of you or across your body while bracing your core.
Pull from the obliques, then bring your elbow up and towards your feet without pulling yourself with your hand. Then, pause to feel the contraction in your obliques, and slowly return to the beginning posture.