Researchers have discovered that caffeine can delay normal sleep times by as much as 40 minutes, if consumed three hours before anticipated bedtime. The amount of caffeine associated with sleep ...

We've seen quite a few DSiWare applications from Nintendo, from stinkers such as Photo Clock to highly praised ones like Flipnote Studio. Now we have Sleep Clock, which works as both an alarm clock as ...

Disrupted sleep-wake cycles often accompany neurodegeneration, but scientists are unsure why. When do each of these processes start and how do they influence one another? In the March 11 JAMA ...