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.
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.