According to MedPage, a new study has found that college students who consider themselves “morning people” are more likely to have better grades than those who are “evening people.” In fact, the benefit of being a morning person was a “full letter-grade difference.”

Researchers surveyed 824 undergraduate students about their sleep habits and daytime schedules. Even after they accounted for academic ability, social ability and SAT verbal scores, researchers found that students who were morning-types were more likely to have better grades than those who considered themselves evening-types.