Not getting enough sleep? Here’s how researchers say it affects your health
How many hours of sleep a night do I need?
Learn English: Did you get enough sleep last night?
Do You Really Need 8 Hours of Sleep Every Night? | Body Stuff with Dr. Jen Gunter | TED
How Sleep Affects Your Brain
How lack of sleep affects health and tips for a good night's rest
6 tips for better sleep | Sleeping with Science, a TED series
Different ways to say - I Need Some Sleep | Free English speaking Lessons online
Talk by Fr Michael Payyapilly VC | "Praying for our Dearly Departed" | English | DRCC
What happens when we sleep?
How to get Good Sleep? | Dr. Hansaji Yogendra
How to succeed? Get more sleep | Arianna Huffington
How to Sleep Less & Sleep Better
What to do when you CAN'T sleep
14 English expressions about SLEEP
Doctor Explains Why You DON’T Need 8 Hours Sleep!
4 Hours of Sleep Is Enough
The secret to getting better sleep tonight | James Leinhardt | TEDxManchester
The Importance of Getting Enough Sleep
Sleep Hygiene: Train Your Brain to Fall Asleep and Sleep Better