[kyriakos]

I usually get this after a stressful day but not to the extend of what you are describing, it lasts for ten minutes or so until I change environment. Do you consume a lot of caffeine while working? Maybe you should check that. Taking breaks every half an hour is always a good thing, never be stuck on the office chair for too long, it causes problems even if there's no underlying health problem. You don't need to run a marathon either as far as exercise is concerned,if you have the chance get down and do 15 - 20 push ups a couple of times a day, it's amazing how much difference it makes. Taking a walk also helps clear your mind, I feel really relaxed after walking my dog for 30 mins.