By Amy Norton
THURSDAY, Aug. 1 (HealthDay News) -- Putting down your phone and living for a week with nothing but sunlight and campfires may bring your body clock in sync with nature's rhythms, a small study suggests.
And, researchers found, even avowed night owls turn into early birds after a week of camping in the woods with no sources of artificial light -- including smartphones, computers and TVs.
"We've already known that artificial light is keeping us up at night," said lead researcher Kenneth Wright, of the University of Colorado at Boulder. But this study, he said, was an attempt to "quantify" the effect that light exposure, both artificial and natural, may be having on the human body's internal "clocks."
"What we found suggests that it's not just artificial light that's keeping us awake," Wright said. "It's also a lack of daylight."