Just lack of focus, before PCS made EVERYTHING 100x times it's importance and supremely distracting. I don't know if that makes sense. :/ But I have ADD too and coffee was usually a simple stimulus to help me perk up and focus on achieving my goals through the day. And I have a really hard time getting motivated in the morning. So both. I know it SEEMED like once I had too much espresso and hard a pretty bad dizzy spell for a couple of days. But I'm trying to figure out if this is my imagination or if I'm blaming the wrong thing.