New large-scale research reveals that a natural preference for late nights is linked to a 79% higher risk of poor cardiovascular health and increased stroke risk.

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

The well-known expressions "night owl" and "early bird," long used in sleep research, do not truly capture the diversity of ...

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

Being forced to go to sleep and wake up earlier than your chronotype has consequences. Are you a night owl who cringes—maybe even yawns—at phrases like “the early bird catches the worm”? If so, Matt ...

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

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

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 ...

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

Are you a night owl who cringes—maybe even yawns—at phrases like “the early bird catches the worm”? If so, Matt Walker gets you. “We lambast evening types as being slothful or lazy, but it’s not their ...