What was the cube aerobics used for in Pink's Funhouse Tour?

[JonathanBlight]

Hey, ive watched the Sydney DVD of Pink's Funhouse Tour and there was no aerobics which used a cube steel frame in it. But when i watched behind the scenes and bloopers there was a cube frame for aerobics. I know that the show changed a bit between countries so i was wondering if anyone knew what song she used it for and i guess if it was cool or not...... haha