working here, pat tarantino is going nowhere in her job. >> we're walking the walk. >> reporter: it's a growing trend to get the work force out of their chairs and moving. workers sign up for one-hour shifts on the treadmill. >> i wanted to check in on our project. >> i would think this would be distracting. >> no. >> focuses your mind? >> sometimes if you're realing e-ma e-mails, the clock is kind of ticking in your head and you come up with solutions. >> blue cross says it causes more productive, active and engaged workers. >> they' thatting the stairs much more than in the past. >> reporter: if you're wondering if this is really necessary -- consider this -- in 1960, almost half of all american jobs required some kind of moderate physical activity. today, less than 20% do. frightened by studies that link sitting at work with higher obesity waits, this worker is standing at her desk and encouraging her colleagues to do the same. >> it makes me be a better worker. >> reporter: more than 10% of her fellow workers are on their feet, increasingly, meetings are held standing. they are sh

pat tarantino is going nowhere in her job. to the encouragement and delight of her employer, blue cross/blue shield of massachusetts. >> we look at this, it's walking the talk. >> reporter: the effort jason robard is part of the growing trend to get america's workforce out of their chairs and working. there are six walk stations. workers sign up for one-hour shifts at the treadmill. at no more than two miles per hour, colleagues work on computers and phones. >> i wanted to check in on our project. >> i would think this would be distracting. >> no. >> no? it helps focus your mind? >> it helps focus. sometimes if you're reading e-mails, the clock's ticking in your head and you come up with ideas of a solution that you're working at at your desk. >> reporter: the results, blue cross says, are more productive, engaged, and active workers. >> we're seeing people walking up and down the stairwells, not taking the elevator, much more so than in the past. >> reporter: the only requirement, proper foot wear. for those wondering, is thi