"Rack Pulls" is a video demonstrating a weightlifting exercise where you lift a barbell or dumbbells from a rack positioned above knee level. This exercise primarily targets the muscles of the posterior chain, including the lower back, glutes, and hamstrings. Rack pulls are beneficial for improving strength and power in the hip and back muscles, as well as enhancing grip strength and overall stability. The video typically emphasizes proper form, technique, variations (such as different rack heights), and the benefits of incorporating rack pulls into a strength training routine to develop muscular strength and resilience.