Five days into the challenge, the Dominguezes have adapted to some of the changes. They eat together as a family and don't throw out leftovers. Unfortunately, there's also been some cheating—Jessica bought some junk food, and Tina purchased five pairs of reading glasses!

On the sixth day, one of the Dominguezes has had enough. Tina finds Jessica watching a movie in her room. "I give up," she says. "Mom, I want to finish my movie."

What movie lured Jessica into quitting the challenge on the very last day? "Titanic," she says, even though she admits she's already seen it "about 10" times.