The video shows a man in a gym lying on a bench and lifting a dumbbell with his right hand. He is wearing a black shirt and black pants. The man is performing a one-arm dumbbell row exercise, which is a strength training movement that targets the back muscles. The dumbbell appears to be of medium weight, and the man is using proper form to execute the exercise. The gym has various other equipment in the background, including weight racks and other exercise machines. The lighting in the gym is bright, and the floors are black.