For many students, it's not easy to be the first one to speak up. It interrupts the lecture and tells everyone you don't know what's going on. Of course, a lot of people might be just as lost as you, but none of them can be sure that others are lost.

I used to ask loads of questions during lectures - feedback I got from my classmates was half saying "thanks for asking the question, I was wondering about that too" and the other half was "why do you ask soo many questions".

I just liked making sure I understood things properly.