When the buzzer rings on your alarm clock, are you well-rested? Or do you yawn, rub your bleary eyes and wish for a couple more hours of shut-eye?
Nearly one-third of adults do not get enough sleep. The number of people who say they are tired has jumped by 20 percent in the past three decades.
But why have we suddenly turned into a nation of insomniacs? Watch this video from the PBS Idea Channel, and you’ll learn the factors that cause us to go sleepless in America.
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