What are some supplements or food sources that are ideal on the day of an exam (prior to, and in-between, for multiple exams).
I'm thinking along the lines of exams that are long and mentally draining 8 hours or so with breaks in between.
Is there a cheaper alternative than Spike/Power Drive? I've heard a lot of good things about these supplements, but they are simply not affordable for me, and it would cost even more to get them shipped to NZ.
Any ideas? In terms of natural food, I'd imagine the ideal food throughout the day would be mod to low GI carbs, such as bananas, bread, etc?