The bright lights and work demand of modern life create a hidden sleep crisis that impacts Americans in countless ways, experts say. During the age of COVID-19, sleep issues have gotten worse. Most adults need seven to nine hours of sleep each night, but one in three Americans gets fewer than seven hours in a typical day, according to the American Sleep Association. Among young adults, 37 percent reported a poor sleep duration. During the pandemic, these numbers have gotten worse. “Across the board health behaviors, mental health, and things like insomnia, have all been moving in a worse direction because of the lack of health care services and the prevalence of stress and unpredictable schedules on Americans,” said sleep expert Dr. Yelena Chernyak. Sleep loss has been on the rise since at least 1991, according to Gallup poll numbers. The 1990s were the same decade where personal computer ownership …