What is the least physically active office job?

Currently 20 years old, finishing my bachelors degree in MIS next semester (May) and I really can't stand anything that has anything to do with physical labor. Even at my part time job, when they ask me to do anything that isn't sitting in my chair, it feels like I'm dying. I'm tired, I have a headache, my bones hurt, my muscles hurt, etc. I'm not exaggerating at all either. I'm not sure how most people stand for work (e.g. fast food, cash register, lines, food service, etc.).<br><br>I'm willing to put in the extra hours necessary even if I have to pay out of pocket for a masters degree. I've heard that long hours for your degree will ultimately pay off in the long run which is fine with me. I'm willing to do the hard work at a young age, not when I'm older.<br><br>So basically, what is the office job that requires the least amount of physical activity?