Why your desk job is slowly killing you

Also, if you are working out and also sitting at a desk for many hours, you probably are not getting enough sleep, which is also bad for your health.

http://www.msnbc.msn.com/id/39523298/ns/health-mens_health/

By Maria Masters, Men's Health
Mens Health
updated 10/26/2010 8:38:01 AM ET 2010-10-26T12:38:01

Do you lead an active lifestyle or a sedentary one? The question is simple, but the answer may not be as obvious as you think. Let's say, for example, you're a busy guy who works 60 hours a week at a desk job but who still manages to find time for five 45-minute bouts of exercise. Most experts would label you as active. (Put your body to the test: 10 standards to assess your fitness level.) But Marc Hamilton, Ph.D., has another name for you: couch potato. Perhaps "exercising couch potato" would be more accurate, but Hamilton, a physiologist and professor at the Pennington Biomedical Research Center, in Baton Rouge, Louisiana, would still classify you as sedentary. "People tend to view physical activity on a single continuum," he says. "On the far side, you have a person who exercises a lot; on the other, a person who doesn't exercise at all. However, they're not necessarily polar opposites."

Hamilton's take, which is supported by a growing body of research, is that the amount of time you exercise and the amount of time you spend on your butt are completely separate factors for heart-disease risk. New evidence suggests, in fact, that the more hours a day you sit, the greater your likelihood of dying an earlier death regardless of how much you exercise or how lean you are. That's right: Even a sculpted six-pack can't protect you from your chair.

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