Question: what should i do before exam?
Answer: Use Your Moments Wisely. The few minutes before you switch off the light is a fantastic time for memorisation. ... 
Eat A Great Meal. Make a special effort to cook yourself a decent meal. ... 
Laugh. ... 
Make Sure You Wake Up. ... 
Know When To Stop. ... 
Use The Space. ... 
Don't Drink Too Much. ... 
Do What Works For You.