Adults in the United States and Japan get much less shut-eye on work nights than their counterparts in other industrialized nations, according to a study of sleep habits.
Americans between 25 and 55 get about 6 hours and 31 minutes of sleep on nights before work, while the Japanese nod off for an average of 6 hours and 22 minutes, a poll by the Sleep Foundation found.
That was far behind the average nighttime work-week snoozes of Mexicans (7 hours and 6 minutes), Canadians (7:03), Germans (7:01) and Britons (6:49).
Sixty-six percent of Japanese respondents said they sleep less than seven hours on work nights, while 53 percent of Americans reported the same.