The video shows a group of young boys exercising in a room with a padded floor. The room has large windows that let in a lot of light. The walls are red and gray, and there are radiators beneath the windows. Four boys are visible in the video. Three boys are on their hands and feet, with their backs raised up. They are moving forward across the yellow mat in this position, moving their hands and feet forward alternately. One boy is wearing white pants and a green shirt. Another boy is wearing red pants and a blue-and-black shirt. The third boy is wearing blue pants and a gray shirt. A fourth boy is standing by the window, wearing a purple uniform. He is moving his arms.