Many students who don't study everyday or prepare their exam have to cram the night for the test the next day. If they sleep early, they won’t pass the exam because they don’t look at subject of examination. In my case, when I was high school student, I usually used to stay up all night in a row three days. Because I had to study twelve subjects, I couldn’t study on each subject everyday. As the result, I got an excellent grade and I was satisfied it.
Therefore, many people worry about staying up all night because it sometimes causes our health problems, but I don’t agree it. Because I have had an experience about getting a good result. Also, I have never felt a week point during I was staying up all night, so it doesn't matter to me.