Popsugar Fitness Workouts 30-Minute Workout Videos The 10 Most Effective 30-Minute Workout Videos, All in 1 Place November 22, 2015 by Jenny Sugar View On One Page Photo 4 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 The Ultimate Flat-Belly Workout Workout: A mix of ab-toning moves with cardio bursts and full-body core exercises to tone your midsection. What you'll need: A mat Previous Next Start Slideshow Workouts