According to the Daily Mail, 46-year-old Sarah Chalmers participated in a sleep school experiment in London, England, respectively, for five consecutive days only 6 hours of sleep with a full 8 hours of sleep, to see what changes in the face. The left is sleeping 8 hours a day, the right is sleeping 6 hours The survey shows that 31.2% of people in China have serious sleep problems, 22% of people still do not sleep after 24:00, and 43.2% of people sleep late because of the Internet and play cell phones. For good sleep, please continue to read on.