Add Yahoo as a preferred source to see more of our stories on Google. While it is difficult to fundamentally change your chronotype, it does naturally shift as you age.Composite: Rita Liu/The Guardian ...

In the protective silence of darkness, another world awakens, where night birds reign. Capable of intense nocturnal activity, these people reveal the richness and diversity of life’s rhythms with ...

Being a night owl has its perks. Scientists have found that people who habitually stay up late may be more creative, and perhaps even more intelligent, than those who go to bed and wake up earlier ...

Every late sleeper has heard it: The chorus of comments that bounce off the walls when they come downstairs after 9 a.m. “Look who decided to join us,” your parents might say, as they sip their third ...