Our Maxim Hot 100 winner clearly realizes the importance of flexibility and balance. She gives a demonstration of how to balance on a Bosu Ball that will probably make you fall over.
"Stay strong," Hailey says at the end of the video, shot by Phil Poynter and filled with the high-priced lingerie of Agent Provocateur.
The sexy short wraps up with a fiery quote straight from the supermodel's mouth: "I love exercising in lingerie. I mean, who doesn't?"
The previous LOVE advent models sure do. See some past entries, below.