Chasing Stronger, Defined Abs?

ABS - Oblique Crunches

Take position lying sideways on the ground on your right hand side. Your legs are stacked on top of each other and have a relaxed bend at the knee. Your left hand is positioned behind your head and your right hand lies across your body. This is the starting position.
Commence the movement by contracting your abdominals and obliques (side abs) and breathe out as you crunch your body across.
At the top of the movement, squeeze the abs hard before slowly lowering the body back to the starting position, inhaling as you do.
Alternate sides upon completion of the set.