Most people know that it’s important for adults to get around six to nine hours of sleep each night. But a growing body of research suggests that when you fall asleep and wake up each day may be just ...

Adults who fell asleep between 10 and 11 p.m. had the lowest rate of new heart disease in a UK Biobank study of more than 88,000 people. Both earlier and later bedtimes were tied to a higher rate of ...