Sedentary jobs

Sitting at a desk typing on a computer, I came across this article about people who have to be very intentional about exercise, because their jobs/lifestyles are mostly sedentary. Some employers, including one major company here in Columbus, provide gyms for their workers. I'd be interested to know about your own jobs and workout habits; and if you don't have access to a gym, what are some ways you can work out at work? Leg lifts under the desk? Toting heavy books? Taking the stairs?
And, take our poll:

If you had a gym at work, would you use it?
	Yes
	No
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