A study published in Current Biology finds that a phenomenon coined 'social jet lag' may explain why so many Americans are chronically sleep deprived. 

According to researchers, the body's physiological clock and the ebb and flow of society's schedule are intrinsically out of psych with one another, causing many people to feel chronically fatigued.  This fatigue leads many to use and abuse alcohol and caffeine, smoke and overeat. 

Researchers suggest that people spend more time outdoors in daylight or at least working near a window to reset their internal clock.