Getting up and moving around is kind of a speciality of mine you could say. Not only does my backside ache when I sit too long I find I get in this zombie-like state and everything I read looks alike!
This may start out a bit odd for you, but I have to say this little thing worked for me. Get a kitchen timer that you can keep by your desk - right next to the computer screen worked for me. Set it for 20 minutes or less if you want, but 20 worked well for me. I found I read an article in about that time, so it was a good stopping point.
When the timer dings you have to get up and do something. Keep something nearby that you can do. An exercise step is great But you can be creative. Hula hoop if you're adventurous etc. But, just moving is good. Reach, bend as far as you comfortably can. Walk in place. Distract yourself with either music through headphones or something fun and interesting on TV if there's one near. You can also switch to YouTube and find music there too.
It's good to hear you're fighting the cigarette habit. You can do it. Keep the faith!
Stay healthy,
Nancy Welker
BellaOnline Yoga Editor