One of the most sought-after looks in fitness is a developed V-shape latissimus dorsi. The back is a large muscle...
https://www.youtube.com/watch?v=1fPwDVAGg64
https://www.youtube.com/watch?v=cjYpL-mI1ZI
https://www.youtube.com/watch?v=YuRPREKyGK0