Popsugar Health & Fitness Workouts Best Exercises to Build Muscle in Your Arms Transform Your Upper Body With These 18 Strengthening Exercises 6 July 2018 by Tamara Pridgett View On One Page Photo 18 of 18 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 18 Dumbbell Thrusters Stand with your legs just slightly wider than hip-distance apart, arms raised to shoulder height with elbows bent, holding weights by your ears. Bend your knees as if you were sitting in a chair, keeping weight on your heels. Press the dumbbells overhead as you straighten your knees to return to standing. This counts as one rep. Previous Next Start Slideshow Fitness TipsBack ExercisesArm ExercisesStrength TrainingWorkouts