Scientists find out how to switch off internal body clock

University of California researchers said this week that they have identified a 'genetic switch' that regulates the human body's internal clock. You know -- that one that gets many of us up every morning in lieu of an alarm clock?

The discovery could lead to newer sleep disorder drugs and associated problems, according to the researchers.

In the research, changing a single amino acid in the BMAL1 protein was found to activate certain processes involved with circadian rhythms, otherwise known as the body's internal clock.