In an indoor gym or dojo, a group of children, predominantly boys, are engaged in a warm-up or exercise routine. They are performing dynamic lunges or stretches, moving in a coordinated manner on a mat-covered floor. The mats are yellow and blue, interlocking in sections. Most of the children are barefoot and wear blue t-shirts, some with a red circular logo, and shorts of varying colors (dark blue, black, camouflage). One child in the foreground wears a blue t-shirt with "JUDO" and "SPORT" text partially visible. The room is brightly lit, with white walls and a white ceiling featuring exposed beams or trusses. Red padded pillars are visible, likely for safety. In the background, there are white grated structures, possibly storage, and some gym equipment such as hanging straps or ropes. An adult voice can be heard counting in Russian, indicating instruction. The scene suggests a training session, likely judo or another martial art, taking place in Chaikovsky, Russia.