Popsugar Health & Fitness Workouts What Are the Best Ab Exercises? These Are the 40 Most Effective Ab Exercises to Sculpt Your 6-Pack 20 June 2018 by Jenny Sugar View On One Page Photo 24 of 41 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 24 T-Cross Sit-Up Begin lying on the floor with your arms out wide to the sides, making a T with your body. Sit up lifting your right leg, and twist to bring your left hand to your right toes. Slowly roll back down, and repeat on the other side. This completes one rep. Previous Next Start Slideshow WorkoutsAb Exercises