Side crunches work the internal and external oblique muscles, as well as the transverse abdominus . Lie down on your left side on the mat with your knees bent and stacked together and your body in a straight line.
Read moreWhat are side oblique crunches?
Lie on a padded surface on your left side . Stack your legs and bring your right hand behind your head. Lie your left arm in front of you or across your body. … Do NOT pull yourself with your hand. Pause and feel the contraction in your obliques then slowly return to the starting position.
Read more