Official studies have claimed that to live a very long life, it’s important to maintain friendships, to keep a positive attitude, not to stress out too much, and to just have really amazing genes. Here are some seemingly odd ways that centenarians and supercentenarians (a person who lives at least 110 years) claimed helped them live such a long time. Calment credited her long, long, long life to drinking Port wine every day, eating two pounds of chocolate every week, and keeping a sense of humor. His motto was “to eat light and live long,” never smoking, only moderately drinking alcohol, and eating until he is 80 percent full. “There’s only one little bite.” Kruger's more than just a creative eater: According to his Twitter bio, he's also the oldest author in the world.