What is very important to know is that, by revision, we do not mean that the student burns the midnight oil the day before the exam by going through the textbook. It is just not possible to go through everything within a span of a few hours, and hence, a proper planned strategy for a vision is expected. It is rather better if one relatively stays away from the books a day before the exam and freshens up his mind which will help him perform optimally on the day of the exam.