Popsugar Health & Fitness Workouts Weighted Ab Exercises Strengthen Your Core and Start Sculpting That 6-Pack With These 18 Weighted Ab Exercises 11 January 2019 by Tamara Pridgett View On One Page Photo 11 of 18 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 11 Single-Arm Chest Press Working one arm at a time makes the core work more to stabilize your torso while you work your chest. Lie on your back with your heels about a foot away from your butt. Hold a dumbbell in your left hand and bring both hands to the ceiling. Bend your left elbow, lowering your upper arm to floor. Exhale and straighten your elbow, pressing the weight back to the ceiling to complete a rep. Previous Next Start Slideshow Dumbbell ExercisesTrainer TipsCore ExercisesStrength TrainingWorkoutsAb Exercises