Mario Lopez is best known for his performances on shows including Saved By the Bell and more recently Dancing with the Stars, but the fit star is also making a name for himself as a published author, with his third book now in stores! "I only write about things I'm passionate about," says Mario, whose previous books were about fitness and family. His latest book, Extra Lean, evolved out of his passion for food. "I'm a big foodie, I'm a professional eater. I'm no Rachael Ray when it comes to being in the kitchen, but I love to eat and I love to learn. What I love about this book is that it embraces food – I don't like to use the word diet – it has a bad connotation – that's all about deprivation. Here we embrace food,we're all about these three rules: a healthy balance of carbs, fat and protein at every meal, eating frequently throughout the day, and controlling your portions.”

But according to Mario, Rachael need not read the book. "Clearly you've been doing something right because you're looking good, girl!" he tells her. "You're looking extra lean!"

Rachael, who has been running several miles every morning, credits her gym with helping her get in shape, so she's giving everyone in the audience a 6-month membership to Crunch!