Popsugar Fitness Workouts The Best Ab Workouts The 20 Greatest Ab Workouts That Will Tone, Sculpt, and Strengthen Your Abs June 21, 2018 by Tamara Pridgett View On One Page Photo 19 of 20 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 19 Carve Your Core With This Plank Challenege Get your strongest, sexiest core with this 20-minute plank challenge. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight WorkoutsAb WorkoutsCore ExercisesBeginner WorkoutsAb Exercises