The fundamentals of this technique

Two men are in a room, one in a striped shirt and the other in a black shirt, facing each other in a mock fighting stance. The man in the black shirt repeatedly throws a series of slow, deliberate punches toward the other man's face and body, while the man in the striped shirt remains mostly stationary, reacting to the movements. In the background, a third person with long hair stands against the wall, holding a camera and filming the interaction. The setting appears to be an office or classroom with a desk, chairs, and a whiteboard.