"Horizontal Seated Cable Rows" is a video demonstrating an exercise using a cable machine where you sit on a bench or seat with your legs extended in front of you and grab the handles attached to the cables. This exercise primarily targets the muscles of the upper back, including the latissimus dorsi, rhomboids, and trapezius, as well as the biceps and forearms for stabilization. To perform horizontal seated cable rows, you pull the handles towards your torso while keeping your back straight and elbows close to your body, squeezing your shoulder blades together at the end of the movement. The video typically emphasizes proper form, technique, variations, and the benefits of incorporating horizontal seated cable rows into a workout routine to improve back strength, posture, and overall upper body development.