1. CDC QuickStats: Percentage of Currently Employed Adults Aged ≥18 Years Who Reported an Average of ≤6 Hours of Sleep per 24-h Period, by Employment Category—National Health Interview Survey, United States, 2008–2009 and 2017–2018
2. Trends in Self-Reported Sleep Duration among US Adults from 1985 to 2012
3. Your Guide to Healthy Sleep;US Department of Health and Human Services
4. Adult Obesity Facts;CDC
5. Prevalence of Overweight, Obesity, and Extreme Obesity among Adults: United States, Trends 1960–1962 through 2009–2010