Investing
Exercise
Education
Meditation
Diet
Sleep
Government
Social Media
Sign In
Topics
About
Terms of Service
Privacy Policy
Cookie Policy
Contact Us
Follow us on Twitter
Sign Out
Sign In
A twenty-year-old usually spends about 20 percent of the night in deep sleep and by the time they're 80, it drops to to 7.
5%
Dan Gartenberg
The Concept of Sleep Age
Sleep Need & Sleep Age: Find Out Yours – Dan Gartenberg
Share a link
Gmail
Twitter
Facebook
email
Email
Whatsapp
Reddit
link
Copy Link
ms