Recent research reveals we dip into a sleeplike state as our brains flush out waste buildup.

Now, a recent study in Nature Neuroscience takes a more precise look at something most of us have experienced: those brief, frustrating moments after a bad night’s sleep when you simply can’t focus.

The mineral zinc may improve sleep or provide an energy boost, but there's not enough evidence to recommend it for most ...

Nearly everyone has experienced it: After a night of poor sleep, you don't feel as alert as you should. Your brain might seem foggy, and your mind drifts off when you should be paying attention. A new ...

I changed my sleeping schedule for a month. Just one hour less of sleep had a profound effect on my energy levels. Share on Pinterest Getty Images/AleksandarNakic My typical sleeping schedule on ...

Chocolate contains caffeine and theobromine—stimulants that can make it harder to fall and stay asleep. Milk chocolate is also high in sugar, which can cause blood sugar spikes and poorer-quality ...

Add Yahoo as a preferred source to see more of our stories on Google. Is your bedroom the right temperature? (Getty Images) (Roos Koole via Getty Images) With many of us waking up to snow and ice, and ...