If your biological age comes back older than expected, "you might want to think about what you can do to change this", he ...

While these types of studies on their own can’t prove that light caused these problems, they add to a growing body of work ...

Gradual sunrise simulation wakes your body naturally through light instead of jarring alarms.

Most sleep experts advise that adults get seven to nine hours of sleep per night for good health and emotional well-being ...

Internal clocks can tick very differently. While some people are most productive in the morning, others are only active later in the day or at night. This phenomenon is known in science and medicine ...

Experts from Norway, Sweden and Finland share how they use sleep, light therapy and positive outlook to ward off the winter ...

Using a light therapy lamp — ones that emit light about 20 times brighter than regular indoor light — can be helpful in the ...

Some people invest in the strategy of sleep banking to get some extra shut-eye ahead of time if they expect to be ...

A simple guide to returning to your schedule when travel, late nights, or seasonal shifts affect your shuteye.

Tired of waking up groggy no matter how much you sleep? Learn how sleep cycles really work—and how your alarm clock might be ...

SEATTLE — It's that time of year to say goodbye to afternoon light, with the earliest sunset of the year expected Sunday at 4:49 p.m. and sunrise at 6:55 a.m. Washington state will "fall back" to ...