well...first you have to abuse the shit out of it in sports, as a performance enhancing drug. then you take it recreationally adn get really addicted. then once you get your tolerance built up you can take a lot more than ninety. for example my record is around 215 in adderall xr. i wouldnt' reccomend that to someone who hasent taken it before or enough to build a good tolerance. then you stay up all the time and learn about every drug on erowid, then you learn the symptoms of add, and go talk to your dr about gettin some.:thumbsup: