As the end of the fall semester looms ever larger, students across the country are hunkering down for the dreaded all-nighters: the non-stop cramming sessions that typically precede final exams. It’s a college tradition, one that many students consider a badge of honor. Staying up all night is a feat of endurance only the young relish. Unfortunately, all that extra studying is for naught. It turns out, cramming aside, a lack of sleep is the single best predictor of poor performance on exams. Dr. Philip Alapat, medical director of the Harris Health Sleep Disorders Center and assistant professor at Baylor College of Medicine, suggests that students study throughout the semester instead of cramming at the last minute. Sure, and pigs should fly, Dr. Alapat.