driving you nuts isn't it! To be honest it could be anything but I have a hunch that your equalibrium my be off! You said that you exercise alot correct? This probably happens at times you least expect it too. You get the jitters, dizziness,excited, and maybe even a bit frustrated. It is hard to concentrate and at times you may feel like your high or that you have medicine head. this may happen when you read and watch tv and any type of activity that may require eye tracking. were you ever diagnosed with any form of ADD? This could be directley related to that as well. people who are dislexic also suffer from the same symptoms as those people who have equalibrium problems, in fact, doctors are begining to realize that they are both connected! If you believe that this could be your problem there is a simple solution. There is an over the counter medication called (meclizine hydrocloride) that is found in dramamine. Yeah i know sounds silly, but i couldn't see straight for months at a time and this drug straightened me out! before i couldn't see straight, I had similar symptoms as you..... but they did not go away and they progressed. I saw a doctor in long island, harold n levinson, he saved my life. If you want more info on your symptoms look up the book smart but feeling dumb.