Another form of ab exercises are known as side crunches. These ab exercises work the obliques, or the long muscles lining the side of your abdomen. To complete these types of crunches, lay on your back as though you were going to complete a traditional crunch. However, before rising off the ground, roll your knees to the side so that your hips are perpendicular with the ground and your shoulders are still flat on the ground. Then, repeat the motion you used while doing traditional crunch ab exercises on each side, twenty five reps at a time. Fifty reps on each side every day will help to define your waist. Jump training is also a form of exercise that helps you get six pack abs that will make men look sexy,this exercise can help u maintain your body shape.