"The passenger of the airplane or the train need only provide his destination and money and receives a swift and comfortable travel experience isolated from the region he travels through. The automobile passenger is required to provide more, constant attention and direction, and in return receives more contact with the environment through which he travels and is free to stop any time and examine it. The bicycle traveler is even more exposed and stimulated. In addition to providing constant attention and direction, he must also provide the motive power by his muscles. But to receive the most sensation, and freedom to explore the details of the world, one needs to be a walker!"----Homer Tressenger
People feel good.