It’s tough to tell your body to breathe through your nose at night, but you can force it to with a trick that’s growing in popularity.

A good night's sleep can work wonders for both mind and body, but what is it that determines how much we need to sleep?

A study measuring the sleep patterns of students has turned up some surprises about how and when our bodies tell us to sleep.

The link between sleep problems and dementia has, however, been found to be inconsistent in population-based studies, the researchers said.

Getting more sleep seems to provide big benefits: People find it gives them increased energy, emotional control, and an improved well-being.

Researchers from China, Sweden, and the United Kingdom found that sleep for more than eight hours increased dementia risk by 69%.