Vox - Americans are sleeping much less than they used to. In 1942, just 11 percent of people said in a Gallup poll that they slept less than seven hours per night.
The report found that 65 percent of Americans get at least seven hours of sleep per night, the minimum amount recommended for good health. And as in all things in American life, there are stark race and class divides when it comes to getting a good night's rest.
Nearly half of all black Americans aren't sleeping enough: Only 54 percent said they sleep at least seven hours, according to the study. The same was true for multiracial people and Native Americans. Meanwhile, 67 percent of whites were sleeping at least seven hours. People with a college degree are sleeping better than the less educated: 71 percent of college graduates slept at least seven hours, compared with 62 percent with a high school degree or less. While you might think work schedules are interfering with sleep, the study found that people who were unemployed or unable to work were more likely to be sleep-deprived than Americans with jobs.