In the video, a man is lying on a bench in a gym, lifting a pair of dumbbells. He is wearing a black tank top and has a wristband on his left wrist. The gym is well-equipped with various exercise machines and weights in the background. The man is performing a tricep extension exercise, which is a common strength training movement that targets the triceps muscles in the arms. The exercise involves lying on a bench and lifting the dumbbells above the head while keeping the elbows stationary. The man is focused on his form and appears to be exerting effort to complete the exercise. The gym is moderately crowded with other people working out in the background.