Popsugar Health & Fitness Arm Workouts Best Arm Workout Your Arms Will Transform After Doing This 10-Move Workout 16 July 2018 by Jenny Sugar View On One Page Photo 14 of 16 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 14 Shoulder Stretch Reach your left arm across your body at chest height. Support the left arm with your right elbow. Use your right arm to pull the left arm closer to your chest to increase the stretch. Hold this stretch for 15 to 20 seconds, then switch sides. Previous Next Start Slideshow Arm WorkoutsArm ExercisesStrength TrainingWorkouts