1 in 4 Korean high schoolers sleep less than 5 hours on weekdays

One in four high school students in Korea gets less than five hours of sleep a night on weekdays, with those sleeping fewer hours reporting higher rates of stress, depression and suicidal thoughts. According to the National Youth Policy Institute on Friday, 27.3 percent of high school students slept less than five hours on average during weekdays, while 59.1 percent…