The 9 Best YouTube Ab Workouts With Dumbbells
9 Dumbbell Ab Workouts That'll Help You Build a Seriously Strong Core
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All you need is one dumbbell for this quick abs and oblique routine from Blogilates founder Cassey Ho. All the moves are done on the floor, from side elbow plank with twists to one arm roll-ups, so grab your comfiest mat, too!