Article Excerpt: Fitbit activity trackers come with a “manifesto.” Over a photo of a fierce-eyed jogger, the company’s website proclaims: “Every moment matters and every bit makes a big impact. Because fitness is the sum of your life.”
Roughly 20 million people have found that message compelling enough to order a Fitbit. Many more seek out other devices and smartphone apps designed to count their steps, their calories, or their hours of sleep; to help them quit smoking, drinking, or stressing; or to help manage chronic illness. The distillation of daily life into a motivational stream of stats has become a booming industry—the world of the quantified self.
Full Article: http://tinyurl.com/jp6v2b7
Article Source: Sciencemag.org