High School Students Have Sleeping Time of 5 Hours and 27 Minutes

SEOUL, Korea, Feb 20 (Korea Bizwire) – Last year the average sleeping time for high school students was 5 hours and 27 minutes, almost 1 hour shorter than that four years ago. According to data released by the National Youth Policy Institute on February 17 based on a survey on 9,521 students between 4th and [...]