Popsugar Health & Fitness Fitness Tips Selena Gomez Ab Workout This Is Exactly How Selena Gomez's Trainer Likes to Sculpt Abs 22 April 2018 by Dominique Michelle Astorino View On One Page Photo 23 of 37 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 23 Side-Plank Crunch Begin in a side elbow plank with your left elbow down and your right hand behind your head. Keeping your torso stable and your waist lifted, bring your right leg up toward your shoulder to lightly tap your right elbow. Lengthen your right leg back to the starting position to complete one rep. Perform the exercise on both sides of the body. Previous Next Start Slideshow Fitness TipsBodyweight ExercisesCelebrity TrainersPlankWorkoutsAb ExercisesPopsugar InterviewsSelena Gomez