Up next is the double-dumbbell row. Start standing with your feet shoulder-width apart with one dumbbell in each hand. Maintain a slight bend in your knees and hinge (bend) at your hips slightly while keeping your back flat. Start with your arms fully extended, contract your back muscles, and simultaneously pull the dumbbells up to your ribs. Hold for one second, and then lower the dumbbells back to the starting position. Complete 10 to 20 reps.