So my question isn't directly related to math, but I think you might be able to help me. I'm a 17 year old, last year at school. My class specializes in math/physics (that's our educational system in Lebanon. Last year classes are divided). I'm really good at math/physics and I can take any given problem thrown at me in those two fields and figure out a solution (with what i know apparently). I honestly dream of becoming a theoretical physicist, knowing that i enjoy maths and physics a lot.
The problem is here: Our educational system here in Lebanon, forces us to take a four-hour mathematics exam (there's an official exam given at the end of the year to all students). As I said, I'm good at maths, but when it comes to that exam, my brain seems to stop functioning after the first hour or hour and a half. And I can't solve simple transformations or simple conics problems. This is getting into me, as my grades are not reflecting my true abilities, and it's depressing. The exam is very long to those who may recommend taking breaks, and it can't be finished if I took breaks, but I'm not able to finish it also because I get tired and my brain shuts down.
Sorry for the long, not so related question, but I hope some of you mathematical minds could have some solution.