Early to bed, early to rise depends on TV - UPI

Across the United States it is television -- not Daylight Saving Time -- that determines the sleep schedule of most people, a study found.

Researchers Daniel S. Hamermesh, Caitlin Knowles Myers and Mark L. Pocock said the natural cue of daylight has some effect on timing, but timing of television programs has a larger effect.

"I lived 20 years in the Eastern Time Zone, I used to stay up until 11:45 p.m. to watch the monologue on the 'Tonight Show,'" Hamermesh of the University of Texas said in a statement. "Living in Texas, I typically turn out the lights at 10:45 p.m., when the monologue is done."...