WASHINGTON — Being a night owl can be bad for your heart. That may sound surprising but a large study found people who are ...

Categorizing people into just two groups — late and early risers — may be oversimplified when it comes to health and ...

Night-owl habits and irregular sleep can disrupt the body's circadian rhythm, raising blood pressure, inflammation and metabolic risk. A cardiologist explains how poor sleep affects heart health, why ...

We all know that owls are nocturnal creatures. Sleeping during the day and hunting at night, these birds live vastly ...

To make sharing a bed better for everyone, try these tools and techniques.

A new study of over 300,000 people has a clear message—and it's not just to go to bed earlier.

Scientists have long known we differ in our internal clocks; the early risers, the night owls and everyone in between. But Nature’s latest research reveals that these differences are not just about ...

Short sleepers, who make up less than one per cent of the population, spend significantly less time snoozing without any ...

Early birds and night owls are the best-known ' chronotypes ' – profiles that describe when during the day a person is most ...

Emerging evidence suggests that "night owls" are more likely to have poor heart health and a higher risk of heart attack or ...

Experts explain the science—and what to do to lower your risk.