Well, you could get up and move around or you could go on Staples.ca and order a better chair?
One of the things I find when I'm sitting on the couch watching TV is that I'm somewhat restless - I tend to move around a fair bit. If anything, sitting at a desk staring at a screen makes my eyes hurt, especially if I'm playing a game and forget to blink.
You know, maybe we're not the target audience for that article. Maybe we move around too much already.