I find that, at the end of nearly 90% of days, my eyes hurt a lot (I have 20/20 vision thank the gnu gods), I have pounding headaches, and my mood plummets, making me an unpleasant fella.
None of my colleagues have the same problem, or at least they tell me they don’t. They take less breaks, don’t exercise, and eat oreos and twixes for breakfast, lunch, and dinner, on top of three or so cans of diet coke daily (of course, not everyone does this, but some do and still none have this problem).
Evidently, this makes me upset. Have you experienced the same and been able to improve the situation? If so, how?
What could also be a factor is bad posture, sitting down allday could tighten up the area around through your neck which could cause headaches. I suggest stretching out everyday for 20 minutes to ease that.