I have the most important exam of my life which is unfortunately in the middle of ramadan. This examination is called JEE ADVANCE. In this examination, i need to concentrate for two shifts of 3 hour paper. So, i am confused about what would be better either fast or eat. Many of my friends suggesting not to keep fast on that day as you will not be able to concentrate properly without food.
Am i allowed to do that without disobeying allah swt ?
What could be done to fulfill that left out fast?