hi my friends! I just want to ask, do you like studying in midnight? I found that, I can concentrate better in midnight, and in afternoon I always feel sleepy! For me, I prefer studying in midnight because I can HIGHLY concentrate in that time!!! But as I know, working or studying in midnight is UNHEALTHY, and many health problems may show up after a few years. I did ask my professors for their opinions, vety surprisingly, the head of physics division in my university, told me: "when I was an undergraduate, I like to study in midnight until I feel very sleepy. In the periods just before the exams, sometimes I even didnt sleep and go for the exam the other day!!!" How about you? You like morning or midnight? Are you affraid of the health problem, when you always study in midnight? Haha, it is a pleassure to discuss with you on this topic! Twukwuw.