As a purely mathematical fact, people who sleep less live more | Picture Quotes
27 Successful People Who Sleep Less — Anne Cohen Writes
Older People Sleep Less. Now We Know Why. | HuffPost Life
Research results that people living in places with lots of nature and parks are less likely to lack sleep - GIGAZINE
A 25-year follow-up study found that people who sleep less than 6 hours are at increased risk of dementia - GIGAZINE
Americans are sleeping less than they were 13 years ago | Science News
Why we sleep less and less? • Texpir
Why Do Some People Need Less Sleep? It's in Their DNA - Scientific American
So, why do some people need such little sleep? | The Independent | The Independent
If I do nothing for a day, I need a lot of sleep to feel rested, but if I am active, I only need a small amount of sleep. Why? - Quora
The worrying effects of working more and sleeping less - BBC Worklife
Does Less Sleep Make You Less Healthy?
Less Sleep, Less Friends » the nerve blog | Blog Archive | Boston University
Why do old people sleep less?
Why Sleep Less?. Introduction and Background | by Luis Corrales | Medium
A second mutation that makes people need less sleep has been found | New Scientist
Why Do Some People Need Less Sleep Than Others? | Live Science
Are we sleeping less than we used to? Here are the facts
