I also get up at least every 30 minutes, it's important to do so especially for your eyes, to get them to focus on something farther away than a monitor. Back then I had made myself a sort of eye chart that I pinned on the far wall of my office I would force myself to stare at it once in a while just for that reason :-) I like to walk around the office, see what my sewing operators are doing and then put the ball and chain back on and sit back down at the puter.

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