In a well-lit gym with a high, industrial-style ceiling, a group of people are engaged in a boxing or martial arts workout. Most participants, including both men and boys, are barefoot and wearing shorts. Several are wearing boxing gloves or hand wraps. They are punching a series of heavy punching bags that hang from the ceiling, which are mostly yellow but include a few red and black ones. The floor is covered with interlocking black mats. In the background, someone is working out with a partner in the middle of the room. The overall atmosphere is energetic and focused on physical training.