im gona need some smart pills

so basicly at the ripe fucking age of 24 im gona get back to school. so im gona need a "brain stack" in order to maximise my cognitive performance: currently im thinking magnesium, vitamin-D, alot of coffee, exercise. what more should i ad? now im ready to go to crazy lenghts aslong as its not particularly harmfull to my overal health. im pretty new to this so explain to me like im a child