At some point, someone has told you that they are either a morning or a night person and how this trait dictates when they are most productive. One University of Texas at Arlington graduate says it may also affect people’s health. At some point, someone has told you that they are either a morning or a night person and how this trait dictates when they are most productive. One University of Texas at Arlington graduate says it may also affect people’s health. Social Sciences Economics & Business Phys.org – latest science and technology news stories