Did you know that at least 62% of Americans have difficulty sleeping, and another 40% admit that lack of sleep, or troubled sleep, interferes at work? Not getting enough sleep results in irritability and an inability to focus. Sleep deprivation can even slow down your metabolism, or make you sick. How many Americans are plagued by trouble sleeping, and what can U.S. men and women do to tackle this problem? How Many People Have Problems Sleeping? As many as 37.8% of adults fall asleep during the day within any given month, and, according to the National Sleep Foundation, 40 million…