Fitness, Measure by Measure

You've got your pedometer. Your GPS monitor. Your power meter. And your heart rate monitor. Good. Looks like your ready to do some exercise, but the real exercise, it turns out, is making sense of all the data generated by the many wearable devices that cost you a couple o' thousand dollars. Is it silly? Does it work? Gina Kolata, our favorite New York Times science writer, admits that she loves this stuff, but wonders if the sum of all data isn't more confusing than no data at all. Kolata talks to consumers, trainers, and researchers, and comes away with the understanding that yeah, sometimes this stuff really does help people get in shape. And sometimes it justs costs them lot of money. Still, she's buying. Read more.