At the end of the work day on the MGM lot, a bunch of chorus girls are excited to be able to watch
Max Baer spar. He and his sparring partner demonstrate boxing maneuvers and strategies, including some that are less than ethical or now allowable in an actual boxing match. Baer then goes into an actual bout to show those maneuvers in action. Lizzie, one of the spectators, is having her own pseudo-sparring in the audience.
—Huggo