Popsugar Health & Fitness Workouts Butt and Ab Workout This Bodyweight Butt and Ab Workout Is So Good, You'll Cancel Your Gym Membership 23 January 2019 by Tamara Pridgett View On One Page Photo 5 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 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. Do 10 reps on each side to complete a set. Previous Next Start Slideshow Trainer TipsBooty Gains15-Minute WorkoutsButt WorkoutsBeginner WorkoutsBodyweight WorkoutsIntermediate WorkoutsCore ExercisesAb WorkoutsStrength Training