Lateral Raises, also called side-arm raises or shoulder raises, work your (you guessed it) shoulders and more specifically your deltoids. It also strengthens your upper back. For this exercise, you'll need a set of 4 to 8 lb. dumbbells. Stand with your feet hip distance apart. Hold a dumbbell in each hand so your palms face in towards the sides of your body. Start with the right side first. Read more