Each of the participants eat the diet of the other. At the end of the experiment, they have a better idea of how extreme their consumption looks to another person. Every episode I saw had the participants sharing an experience that gave them empathy for other that usually didn't exist before. At the follow-up after the end of the experiment, they were true friends who relied on each other for encouragement. I can think of only one show where a participant had gained weight. All of the others were successful in following their program.
Did You Know?
Himself - Presenter
[at the Women's Hospital
They deliver 750 babies every month here, around half of the expectant mothers are obese. That means complications to both mother and baby, including high birth weight babies, high blood pressure, gestational diabetes, and DVT.