Only if you have ADHD. If you don't, it's negatively impacting mental performance - but it's really good at helping you to deliver slightly subpar performance

Only if you have ADHD. If you don't, it's negatively impacting mental performance - but it's really good at helping you to deliver slightly subpar performance for grossly extended periods of time. (Common uses: Crisis situations where you cannot step away. Cramming for exams) I suppose you could call this a different form of concentration, but AIUI it's more energy than concentration.