STARTING POSITION:
Stand straight with your feet shoulder width apart with a wall behind you. Place your hands in your low back and slightly bend your knees.
MOVEMENT:
Turn to the right side and try to touch the wall without any movement of your legs until you feel the stretch in your oblique muscles. Maintain the stretch during the required time and then return to the starting position. Then switch the side.
TIPS: You should feel the stretch of the muscles but not pain.