Exam Time!

Today I was planning my students' exam, and I started remembering about how I used to feel when I was at the other side of the table.
I remembered all the stressing experiencies, and how my hands trembled when the teacher gave me the exercises.
Exams are usually unfair because many situations are not taken into account.
How can we lower the students' affective filter and help them to feel more confident?
I thought about this detail. It's not something big or expensive, but I think my students will feel a little more relaxed.
I trust them! And I know how hard they have been working!
What's more eating something sweet is usually recomended before exams. Scientists claim that if there isn't enough glucose in the brain, for example, neurotransmitters, the brain's chemical messengers, are not produced and communication between neurons breaks down.
What do you think? Feel free to share your ideas :)