Calculus rules. Chemistry rules. Medical statistics FTL.
Slack! Just do a little homework at a time, relax and listen to metal, play some games, earn some cash, sleep well. Just keep up and do your best at group projects and research. If you create your own summary you will literally be able to study the day before your exam and pass with an A/4.0/8+ (Netherlands: our grades are your GPA plus four).
The best learning comes from making the summary, doing the tests, debating with your professor and keep practicing until you get it. If you try to push yourself too hard or make too much exercises, you will lose all motivation which will detract from your results. I seriously believe that there's an inverse hyperbole when it comes to time spent studying and test results.
Try to recite the most important terms for every term, get a good night sleep and make old exams with the answers within arm's reach.
The same for presentations and research groups.
