Popsugar Health & Fitness Workouts Best Core Exercises I'm a Trainer, and These Are My 16 Favourite Ab Sculpting Exercises 24 July 2018 by Tamara Pridgett View On One Page Photo 1 of 14 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Up-Down Plank Begin in a full plank. Lower your right elbow to the mat and then your left, coming into an elbow plank. Put your right hand on the mat, and straighten your right elbow. Do the same on the left to return to a full plank. This counts as one rep. Previous Next Start Slideshow Trainer TipsCore ExercisesStrength TrainingWorkoutsAb Exercises