This exercise is great for entire abdominal area, and especially for your side abdominals. You will need a flat bench to perform this exercise.
Lie flat with your head resting on the floor and your fingers overlapping behind your head. You knees are bent and forming 90 degree angle and resting on a flat bench.
Raise and rotate your upper body. With your right shoulder approach your left knee, but you do not need to touch it. When raising and rotating your body, try to