A group of children, predominantly boys, are engaged in a martial arts training session in an indoor gym located in Chaikovsky, Russia. The children are dressed in traditional martial arts uniforms (gis), with some wearing white and others blue, distinguished by various colored belts including orange, yellow, and red. The training area features a floor covered with interlocking foam mats in alternating blue and red sections. In the background, gym equipment such as a metal framework structure, stacked white crash pads, and a large blue wall-mounted mat are visible. Bright natural light streams through large windows, indicating it is daytime and casting distinct shadows across the mats. The children are performing an exercise sequence that involves transitioning from a push-up position to running or jogging across the mat area. They appear focused and actively participating in the drill, with some exhibiting smiles or expressions of enjoyment. No visible text is present in the video.