University students with early classes sleep more, not less

University sudents who start classes earlier in the morning sleep more -- not less --- than those who start classes later in the day, says a new study of 253 American students. The reason is that those without morning classes are more likely to stay out drinking on school nights, which leads to a lower quantity of sleep overall, according to study co-author Pamela Thacher, a psychologist from St. Lawrence University in New York State. Night owls also reported lower grade averages than their early rising peers. The study also found that the average amount of sleep students report getting each day is 8.0 hours --- exactly what experts recommend.