Everyone confesses in the abstract that exertion which brings out all the powers of body and mind is the best thing for us all; but practically most people do all they can to get rid of it, and as a general rule nobody does much more than circumstances drive them to do.
Bio: Jon Gertner is a veteran journalist, editor, and author. Currently a contributing writer at The New York Times Magazine, he is best known for his work on science, technology, innovation, business, and society.
