India, July 27 -- For students, staying up all night in the days leading up to an exam may appear like an instinctive response to an unfinished syllabus. By cutting down on sleep, it feels like they are gaining a few additional waking hours to study, revise and leave no stone unturned in their preparation.ALSO READ: Can poor sleep increase hypertension risk? Cardiologist shares 5 bedtime habits to manage blood pressure

While the intention is surely sincere, the strategy may undermine their efforts and produce the opposite result. Parents may then wonder why their child did not score well despite pulling multiple all-nighters.

Among students, studying longer late at night is believed to improve academic performance, as they are under the...