10 Best Exercises For Killer Abs

5. Advanced Russian Twist

Once you have mastered the Russian twist mentioned in point 4, you can move on to a more advanced version once you have mastered the basic one. If you lift your feet a few inches off the ground and keep them there the entire time you are performing this exercise, you will feel the burn in those abs. Start with one set of 10 repetitions and gradually work your way up to three sets of 15 repetitions.