It doesn't mean staying up and waking up late is inherently unhealthy.

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

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

A new study reveals that sleep types are more varied than simply larks and night owls – and questions the link between rising ...

The familiar labels "night owl" and "early bird," long used in sleep research, don't fully capture the diversity of human ...

WASHINGTON (AP) — 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 ...

People who are more active later in the day appear to face a higher risk of cardiovascular disease, according to a new study. Researchers explain why.

Night owls, who tend to stay up late and wake up later in the morning, reap a number of benefits and boast certain traits that are generally overlooked in our culture that celebrates early risers, ...

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