Dr. James Levine, an obesity researcher at the Mayo Clinic, has designed an office makeover that he believes should help keep people active and burning calories even during usually sedentary desk work and meetings.

Instead of being sedentary in front of their computers, they'd stand. But instead of standing still, they'd walk on a treadmill..."I hate going to the gym, which may be partly why I'm so interested in this," he said, keeping up a 1 mph pace on his treadmill while checking e-mail and fielding questions from a reporter. That speed is slow enough to avoid breaking a sweat but fast enough to burn an extra 100 calories per hour...

Since, as we all learned from Tiernan yesterday, "I have a butt," it might be good to get my butt moving while I'm checking email, blogging, and working on the kids' homeschooling.