I took a packet of Polos with me to every one of my GCSE, A-Level and university exams. Couldn’t go in unless I had a packet of Polos, could I? I wouldn’t even necessarily eat one, I just had to have them with me.
However, this has led to a situation where I associate Polos with the stress of exams and have not been able to bring myself to have one in more than 10 years