I guess you could call them habits
When I have a big test coming up, I always make sure that I'm wearing the same perfume as I was when I was studying, and if I was chewing gum or sucking on a candy I make sure I have that with me the day of the test. Memory is linked to smell/taste so I try to take advantage of that
Also, I noticed that I *always* wear tanktops to my final exams and Regents. They are given in June so 99% of the time it's hot.
Did you/do you do any of this kind of stuff before tests?