What to do during interviews?

Question

focus in the sense attentive
during the viva I feel so nervous that I get mix up with all reads and concept.
plz help me so that during any q&a I will be more stronger

Answer 1

- Get enough rest the night before, not getting any or enough sleep may drastically influences your overall performance.

- Have yourself a bottle of water, or coffee if you choose so, in any way possible, avoid getting dehydrated, even lack of fluids supply may screw your brain.

- Pray, I can't explain this one : )

Answer 2

just chill and act cool

Answer 3

-Wear something nice
-Sit up straight
-Be on time
-Speak clearly and explain things simply, don’t overdo an answer
-Smile
-Shake the interviewers hand
-Believe in yourself

Best of luck!