At the end of a session, we have to give an examination where 2 years worth of syllabus is asked and it is the most important examination. It takes place in 2 sessions 9-12 and 2-5. I have heard from some of my peers that having things like energy drinks or consuming chocolate could help boost the performance, while others tend to thing it's useless and might even have a negative effect on our performance. We get only 1 shot at this exam and I don't want to take any chance with it. So what I want to ask is,
1) Can consuming energy drinks or chocolate have any effect on my performance (Positive/negative)
2) Are there things whose consumption or general recommendations which can boost my performance on the final day as after giving a 3 hour paper is quite exhausting mentally and physically. And also since it's lunch time, the type of food that I should consume (eg should I have more carbs to get energy or will it make me feel sleepy ??)