Popsugar Health & Fitness Dumbbell Workouts Quick Dumbbell Arm Workout If You Want Toned Arms, All You Need Is This Quick Dumbbell Workout — Just 4 Minutes! 27 June 2018 by Jenny Sugar View On One Page Photo 8 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Overhead Triceps Extensions Stand with your feet hip-distance apart. Hold one dumbbell (go for your heavier weight) with both hands, bending the elbows behind your head. Straighten your arms to lift the dumbbell into the air, then slowly bend the arms to lower. This counts as one rep. Perform as many reps as you can with correct form for 30 seconds. Previous Next Start Slideshow Dumbbell WorkoutsArm WorkoutsBeginner Workouts5-Minute WorkoutsStrength TrainingWorkouts