What is the example exercise for the teres major?

The single arm row is an effective exercise for targeting the teres major muscle. This muscle, located in the upper back underneath the shoulder, plays a critical role in shoulder adduction, extension, and internal rotation. When performing a single arm row, the shoulder is drawn back and down, engaging the teres major as the arm pulls the weight toward the torso. This movement mimics the action of rowing, effectively stimulating the muscle and promoting strength and stability in the shoulder complex.

The other exercises listed do not specifically engage the teres major to the same extent. Shoulder shrugs primarily target the trapezius, while external band rotation focuses on the rotator cuff muscles. Chest flyes emphasize pectoral muscles rather than those in the upper back. Therefore, the single arm row stands out as the most appropriate exercise for activating the teres major.