You don't have to carry a club or wear a bearskin to live like a caveman. To keep fit, a number of people have adopted the "Paleo" lifestyle -- eating and exercising like our ancestors from the Paleolithic era.
Art De Vany, 73, is often called the "grandfather" of the Paleo movement. For De Vany, a workout includes pulling his Range Rover in his driveway.
He compared it to "hauling heavy bison out of a pit."
"If you think about it, you're using every single muscle in your body. You're not...Full Story