Ok, maybe it's really killing you.
http://www.msnbc.msn.com/id/34209499/ns/health-fitness/Your body's big enemy? You’re sitting on it
Most of us spend our days on our behinds — and it’s killing us
You might not want to take the following stat sitting down: According to a poll of nearly 6,300 people by the Institute for Medicine and Public Health, it's likely that you spend a stunning 56 hours a week planted like a geranium — staring at your computer screen, working the steering wheel, or collapsed in a heap in front of your high-def TV. And it turns out women may be more sedentary than men, since they tend to play fewer sports and hold less active jobs.
Even if you think you have an energetic lifestyle, sitting is how most of us spend a good part of our day. And it's killing us — literally — by way of obesity, heart disease, and diabetes. All this downtime is so unhealthy that it's given birth to a new area of medical study called inactivity physiology, which explores the effects of our increasingly butt-bound, tech-driven lives, as well as a deadly new epidemic researchers have dubbed "sitting disease."
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That's not all. The less you move, the less blood sugar your body uses; research shows that for every two hours spent on your backside per day, your chance of contracting diabetes goes up by 7 percent. Your risk for heart disease goes up, too, because enzymes that keep blood fats in check are inactive. You're also more prone to depression: With less blood flow, fewer feel-good hormones are circulating to your brain.