Here's an excellent waist trimmer that's a great addition to your abdominal work. It isolates the side-waist muscle group called the obliques and when included as a part of abdominal exercises, ensures a total workout for the waist.
Positioning
Lie on your left side on an exercise mat or carpeted floor. Bend your knees and curl slightly at the hips. Clasp your hands behind your neck.
The Move
Raise yourself up slightly by lifting your upper torso off the floor, contracting your waist. Return to the starting position and continue the exercise for the suggested number of repetitions. Repeat the exercise on the other side of your body. Keep your core engaged throughout the entire exercise.
Advanced Tip
As you master this move, try to increase the number of repetitions you can do each time you exercise. Abdominal muscles benefit from numerous repetitions.
Jim Germanakos's Exercise Tip
Do not interlock your fingers while doing crunches. It will strain your neck.