> I can say from personal experience that modafinil doesn't prevent sleep. These effects on sleep are highly dependent on genetics. They couldn't test this stu

> I can say from personal experience that modafinil doesn't prevent sleep. These effects on sleep are highly dependent on genetics. They couldn't test this stuff much longer than a decade ago. The difference is large enough that it could potentially improve certain stages of sleep in some individuals. Contrast to caffiene which is detrimental to sleep quality across the board.