If you thought "Cardio Striptease" was pushing the fitness envelope, wait until you check out "Stiletto Strength," a new class that gets women in shape to wear stiletto heels.

The class, being taught at a Crunch gym and taught by dancer Amber Efe, shows women how to pivot in high heels and walk like a model.

"Stiletto Strength" was introduced in January after a client complained about walking in high heels throughout the winter.

"They're businesswomen and they have to wear heels so they want to understand how to look better in them and feel confident," said Donna Cyrus, Crunch gym's national fitness director.

Crunch gym is known for their unusual fitness classes, including "Circus Sports" and "Cycle Karaoke."