Hammer strength row with dumbbells Muscles Worked: The latissimus dorsi, middle back, and trapezius muscles (upper back) are all worked out by two-arm hammer dumbbell rows. In addition to the forearms and back deltoids (shoulders), this move works the biceps and other secondary muscle groups. (Hammer strength row with dumbbells https://hammerstrengthrowwithdumb66888.blog-a-story.com/10978612/hammer-strength-row-with-dumbbells-exercise