Popsugar Health & Fitness Workouts The Best Ab Workouts The 20 Greatest Ab Workouts That Will Tone, Sculpt, and Strengthen Your Abs 6 June 2018 by Tamara Pridgett View On One Page Photo 2 of 18 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Flatten Your Abs With This Ultrafast Workout Who said you need to spend countless hours working on your abs? Take two minutes to flatten your abs with this four-move workout. Previous Next Start Slideshow Bodyweight WorkoutsCore ExercisesAb WorkoutsStrength TrainingWorkoutsAb Exercises