Popsugar Fitness Workouts Best Ab Workouts on YouTube 9 of the Best Ab Workouts on YouTube July 2, 2017 by Dominique Michelle Astorino View On One Page Photo 5 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 8-Minute Abs The classic '90s workout 8-Minute Abs still works today — get ready for tons of crunches! Previous Next Start Slideshow WorkoutsYouTubeAb WorkoutsAb Exercises