Be careful when studying. Being too active at the scholar process might affect your health: doing all of the research papers, writing dissertations, reading tons of literature. It is commonly known that students are lot more like to loose their eye sight, the immune system is getting weaker while the lack of movement and activity affects it. So next time when you get down to books, make sure you have slept well and had a good dinner. None of the degrees and grades is worth your precious health. Good luck at studying!!!!