It's well known that the wealthy have more than the average human, including exorbitant real estate, sports cars and fine jewelry. But they also have more of something else -- sleep.
원문출처 : https://www.cnn.com/2020/07/28/health/rich-sleep-more-than-poor-wellness/index.html
원문출처 : https://www.cnn.com/2020/07/28/health/rich-sleep-more-than-poor-wellness/index.html