Popsugar Fitness Workouts Plank Challenge Workout Take the Plank Challenge to Carve Your Core June 23, 2018 by Susi May View On One Page Photo 7 of 11 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Plank With Shoulder Tap In a plank, alternate bringing your hand to the opposite shoulder without allowing your torso to twist. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight WorkoutsAb WorkoutsPlankBeginner WorkoutsIntermediate WorkoutsBack WorkoutsArm Workouts20-Minute Workouts