Japanese Sleep Research Report - Adults who sleep 7 hours live the longest - sleeping too much can be fatal - start living to 100 from now.
Have you ever calculated how many hours you sleep on average in a day? According to the latest Japanese research survey, people who sleep 7 hours a day tend to live the longest, and the more one sleeps, the higher the mortality rate. People who need to sleep more than 9 hours a day may have health issues and should see a doctor to thoroughly identify the root cause.