A person lying on the back and holding a large blue exercise ball above their head, is doing a core exercise in a studio. The exercise ball is between the person's legs and supported by the hands, with the legs and arms visible in the foreground. The studio has a mirrored wall, visible at the bottom of the frame, reflecting the studio interior with other exercise balls, yoga mats, and people exercising. The ceiling is white with square fluorescent lights. The person wears dark leggings and white socks. A voice in the background provides instruction.