Popsugar Fitness Workouts Quick Dumbbell Arm Workout All You Need Is 4 Minutes and 2 Dumbbells to Completely Tone Your Arms June 27, 2018 by Jenny Sugar View On One Page Photo 8 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 Overhead Triceps Extensions Stand with your feet hip-distance apart. Hold both dumbbells with your two hands, bending the elbows behind your head. Straighten your arms to lift the dumbbells 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 WorkoutsStrength TrainingBeginner WorkoutsDumbbell Workouts5-Minute WorkoutsArm Workouts