It's only when movement becomes the most natural state in our lives that we can finally begin to enjoy the motion. And it's only when standing still becomes impossible that we can finally embrace the kinds of changes that are inevitable in our lives.We were not designed to stand still. If we were, we'd have at least three legs. We were designed to move. Our bodies are bodies that have walked across vast continents. Our bodies are bodies that have carried objects of art and war over great distances. We are no less mobile than our ancestors. We are athletes. We are warriors. We are human.