What are some effective stretches for targeting the latissimus dorsi and pectoral muscles simultaneously?

One effective stretch for targeting the latissimus dorsi and pectoral muscles simultaneously is the standing wall stretch. To do this stretch, stand facing a wall and place your hands on the wall at shoulder height. Step back with one foot and lean forward, keeping your back straight, until you feel a stretch in your chest and back. Hold for 30 seconds and switch sides.