Although i am 20 now, i still don't know what a reasonable time on study should be. When i ask brillant students about this, they say only stupid people need to study and brilliant one don't have to. I think they are just kidding but it does seem that brillant students spend little time on studying but still achieve great results. My iq is 120 according to facebook test. I am not brillant so i think i should spend more time on study. But my friends and i are actually very laid back and spend most of our time on nonacademic stuff. So it turns out that my gpa is 2.57 and we have to be serious now(no option). In this summer we plan to study things that will be taught in the nest semester and we cancel the trip to China. In the past we just revised material before exam but we attended every class. But in summer when there's no classes and exam how much time should we spend on study? Do you think three hours per day reasonable? We've borrowed some books and found some great material like some lecture videos. We study math and physics in college.