Can't sleep? You're not alone. More than 70 million Americans suffer from chronic sleeplessness, and 35 percent of us regularly get less than seven hours of shut-eye. And a good night’s rest is more than a luxury: chronic lack of sleep is linked with an increased risk of heart disease, stroke, diabetes, high blood pressure, cancer, mood disorders and other serious conditions.
Â
Even if you do think you get enough sleep is your slumber efficient, restful and deeply restorative? Take this quiz, and find out how well you really sleep.