From a purely utilitarian perspective, how is requiring exercise different from mandating seat belt use? According to the National Transportation Safety Board, seat belts prevent approximately 10,000 deaths a year in the United States.29 According to the Centers for Disease Control, inadequate physical activity causes about 300,000 deaths a year in the United States—thirty times more.30 Worldwide, physical inactivity causes about 5.3 million deaths per year—about as many as caused by smoking.
