By Dr. Liji Thomas, MD People who stay up late may face higher cardiovascular risk. However, this large UK study shows that ...

Staying up late has long been framed as a harmless personal preference, but new evidence suggests it may carry a measurable ...

Researchers have identified five subtypes of the "early bird" and "night owl" sleep–wake patterns, each associated with ...

You wake up at the crack of dawn and power through mornings at work. By the afternoon, though, you’re crashing. Compare that to your work wife, who struggles to keep her eyes open all morning but ...

Our chronotype, or our biological preference for mornings (people known as ‘larks’) or evenings (night owls), can shape how ...

Being more active in the morning or afternoon is not just a matter of personal preference. Chronotype, which is each person's ...

Most people acknowledge that there are two types of sleepers in the world—early birds and night owls—but research has shown that there are actually four or more sleep-wake cycles. The time you ...

Get some morning light, when possible, for 20 to 30 minutes. Exposure to bright light first thing in the morning helps ...

Adults who naturally stay up late tend to have poorer heart health profiles than people with typical or early sleep-wake ...

If you feel more sluggish during certain times of the day, it could be due to your sleep chronotype. The chronotype affects the body’s natural tendency to be asleep or awake, according to the Sleep ...

Early to rise makes a person healthy and wise? Not necessarily. Depending on how your body clock is wired, the opposite may be true! Every person's body is set to follow daily patterns, including one ...