Chronotype isn't just morning lark or night owl: your body clock runs on three dials, not one. Take this quick, science-based ...

Bad news, night owls: Staying up late can be bad for your heart. But there's good news, too.

Add Yahoo as a preferred source to see more of our stories on Google. Staying up late when you have to wake up early isn't exactly the best idea if you want to be rested, but night owl tendencies can ...

Being a night owl can be bad for your heart. That may sound surprising but a large study found people who are more active late at night — when most of the population is winding down or already asleep ...

When it comes to preferred sleep schedules, people are usually placed into one of two groups — early birds or night owls — and each has its own reputation. Society has repeatedly celebrated and ...

Many prominent people claim an early start to their day is the key to their success. CEOs, world leaders and influential figures often tout routines involving early mornings, and hustle culture echoes ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. If you’re groggy in the morning but perky ...

It's 11 pm on a weeknight and your teenager still has their bedroom light on. You want them to get enough sleep for school the next day, but it's a struggle. Our new research shows what happens to the ...

A study found that night owls consuming energy-dense foods late at night are associated with higher body fat, belly fat, ...