Do we really need to walk 10,000 steps a day? It might surprise you to learn this idea was part of a marketing campaign that originated from a Japanese device called "Manpo Kei"—the 10,000 steps calculator. The pedometer's naming was not based on any specific study, but rather on general health knowledge of the benefits of walking. However, most health experts agree that taking 10,000 steps each day will go far in keeping you fit and healthy. Just don't get discouraged if you don't reach an exact step number. So long as you are making regular physical activity a part of your lifestyle, you're doing well!