My exams were regularly scheduled at 09:00 in the morning. I would regularly gasp when reviewing the errors I made, wondering how drunk I must have been to make

My exams were regularly scheduled at 09:00 in the morning. I would regularly gasp when reviewing the errors I made, wondering how drunk I must have been to make such gross ones. Indeed I was drunk... from sleep deprivation. I wonder how much has this affected my overall performance as a student and later as a professional...