By now, most people have heard that walking 10,000 steps a day is advised in order to live a healthy life. You’ll find hundreds of articles online flashing this advice. But this conveniently neat number was never backed by science, being instead part of an old Japanese ad campaign. Some researchers have, however, investigated how daily walking impacts our health and have some good news. Walking really does improve health and dramatically reduces the risk of death. And luckily you don’t need 10,000 steps to reap these benefits. The “10,000 steps” magic number can be traced back to the 1964 Tokyo Olympics, during which a number of public relations and marketing campaigns were heavily promoted by a number of local and international companies that tried to capitalize on the surrounding fitness craze. One such campaign involved the marketing of a pedometer called the manpo-kei, which literally means “10,000 steps meter” in Japanese. Since then, this catchy figure has been regurgitated time ...