ENThe Mystery of Richard Simmons: A Diane Sawyer SpecialPlayback issues? Try another server.Server 1Server 2Server 3Server 4Server 5Server 6Server 7Server 8Server 9Server 10Server 11Add to My ListDownloadShareThe Mystery of Richard Simmons: A Diane Sawyer Special20260ReleasedMay 12, 2026The beloved fitness personality's remarkable rise to fame; examining the cultural impact that made him a household name.