You seem to have a negative anchor for studying, which means that whenever you sit down to do work your mind gets all anxious because that was how it used to feel when you studied--like Pavlov's bell. The sickness associated with studying is most likely irritible bowely syndrome, and the only way to fight it is on the mental side. In your meditation sessions try creating a new anchor to release the old one. Do this by imagining yourself studying in a relaxed, normal, focused manner. Good luck, and keep us posted.
