Good news! Scientists have found a gene that enables those who possess it to perform extremely well on six hours of sleep a night. Bad news: It is found in less than 3 percent of people. For the other 97 percent of us, six hours isn’t nearly enough.
Do you get enough sleep? Most people don’t. Research shows that the average adult needs seven to nine hours nightly; teens need 8.5 to 10 hours. Yet three in seven Americans ages 13 to 64 say that on weeknights, they rarely or never get a good night’s sleep. (In related news, Americans drink, on average, three 12-ounce caffeinated beverages every weekday.)