Arthur De Vany on Modern Cavemen

Not all cavemen are in the past. The Modern Caveman Movement involves men in urban gyms, grunting and sprinting on all fours, lifting heavy stones, and running barefoot. They're eating a Paleolithic diet of meat, often raw, with no grains or beans or bread or dairy. 72 year-old Arthur De Vany is an economics professor whose physical accomplishments could awe a 20 year-old. He tells Anne Strainchamps it's all about mimicking what our cavemen ancestors would have done.