Sunlight plays a huge role in our energy levels and sleep quality. One study found that those who got enough morning sunlight ...

Waking up tired or wired? Your circadian rhythm could be off. Reset your internal clock with science-backed habits for deeper ...

Social media has a name for this — cortisol addiction. "The concept of cortisol addiction has gained a lot of attention on ...

But while deciding when to eat usually comes down to personal preference and what your day-to-day schedule looks like, it's ...

If you give your body enough time to find the beat, you’ll notice differences not only in how you sleep but also how you feel ...

A good night’s sleep often sets the stage for a positive day. But for the nearly quarter of American adults struggling with ...

The study also may help explain how disruptions like jetlag and daylight saving time changes impact circadian rhythms and ...