"Everyone [at Harpo] was so excited and interested in it. I think knowing that it can be such a game-changer—that it can really affect you in your body and your spirit—I think so many people were just excited to give it a whirl," Kathy says.
While many staffers were reluctant to change their food habits, 378 signed up for the one-week challenge. "I usually eat a sausage muffin every day and a huge coffee with five creams and a little ice," says Rich, a video editor. "So today I decided not to do that. I thought, 'Okay, I'm going to start the day right. We're going to try this whole vegan thing.'"