Inside a well-lit gymnasium, a group of about 15 people, mostly children, are practicing what appears to be judo or a similar martial art. They are spread across a blue and yellow mat, performing headstands with their legs spread apart. Most wear white uniforms, but some are wearing black or yellow tops. An adult man in a white uniform and black shirt is standing near one side of the group, seemingly instructing or observing. The gym has flags and exercise equipment along the walls, including punching bags and various weight machines. There is also a safety net visible in the foreground on the right. Overall, the scene depicts a training session in progress.