Get Sculpted Muscles Like J Lo's With These 21 Arms, Abs, and Butt Strengthening Exercises

Work the back of your shoulders, upper, and middle back with the bent-over reverse fly.

• 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.