The 14 Best Back Exercises, According to Trainers

The reverse fly targets muscles in the upper back, including your rhomboid muscles (which are on each side of your upper back) and your shoulder muscles, per Mayo Clinic.

• Holding a dumbbell in each hand, stand with your knees slightly bent. Keeping your back flat, bend forward at the hip joint.
• Exhale and lift both arms to the side, maintaining a slight bend in the elbows and squeezing your shoulder blades together. Then, with control, lower the dumbbells back toward the ground. This completes one rep.