Did you hear about John Cisna, the Iowa science teacher who lost almost 60 pounds eating nothing but McDonald's for breakfast, lunch and dinner for six months?

He set it up as an experiment for his high school biology class, and no one believed he'd lose any weight. But once he did, he made headlines around the world.

His favorite foods were the Egg White Delights and the Bacon Habernero Ranch Quarter Pounder.

I helped him write an e-book about the experience called My McDonald's Diet, which you can get on Amazon. It has all the daily menus in it and lots of stories about the experiment. It's pretty funny!