As the movement becomes more and more popular, temptations including donuts, pizza and mock hamburgers allow vegans to eat just as badly as everybody else. "There are a lot of unhealthy options. It's hard to resist at first," Jessica McCully, 28, said at a vegan food festival in the Los Angeles area, a fake chicken taco in her hand. McCully is a new convert to "mock meat" thanks to her girlfriend, and says that in just two months of adopting a vegan diet, she feels happier and "more energetic.