Popsugar Fitness Workouts 3-Minute Ab Workout Get a Complete Ab Burn With This Quick Core Workout May 21, 2015 by Jenny Sugar View On One Page Photo 6 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Cobra Lying on your belly, plant your hands underneath your shoulders and press the chest up, straightening the arms as much as you need to feel a stretch in the abs. Hold for 30 seconds and then release. Previous Next Start Slideshow WorkoutsStrength TrainingIntermediate Workouts5-Minute WorkoutsAb Exercises