Popsugar Health & Fitness Workouts How Do I Work My Transversus Abdominis? These Are the Ab Muscles Serena Williams Said She Always Focuses on and Why It's Important 13 May 2020 by Tamara Pridgett View On One Page Photo 10 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 10 Stir the Pot Begin in an elbow plank with your forearms resting on the top of a ball. Keeping your core strong and your body still, use your arms to roll the ball in a small clockwise circle. This completes one rep. Previous Next Start Slideshow Black WomenTrainer TipsWomen Of ColorGIF ExercisesAthletesFitness TipsBodyweight ExercisesCore ExercisesInjury PreventionWorkouts