The night before an examination is the anxiety which takes places in the mind of all examinees. The degree of panic of anxiety depends on the strength of their preparation and physical constitution . In fact , the night before an examination is a night of unease and peculiar experience . T overcome the trouble of this night the examinees should prepare their lesson much earlier and try to pass this night with a normal state of mind.
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Yes, last day cramming is not a very effective or efficient way of learning. Getting a relaxed night's sleep before an exam can boost your IQ for the day by several points.
Thanks @imelia for you valuable comment