Morris said that bicyclists tend to be a self-selected group who are very enthusiastic about their mode of transportation. "Bicyclists are generally younger and physically healthy, which are traits that happier people usually possess," he said.
Morris said that bicyclists tend to be a self-selected group who are very enthusiastic about their mode of transportation. "Bicyclists are generally younger and physically healthy, which are traits that happier people usually possess," he said.