Can You Sleep Too Much? (The Answer Might Surprise You)
What happens when we sleep?
How much sleep do you really need? | Sleeping with Science, a TED series
Doctor Explains Why You DON’T Need 8 Hours Sleep!
How many hours of sleep a night do I need?
Can You Get Too Much Sleep?
Do You Really Need 8 Hours of Sleep Every Night? | Body Stuff with Dr. Jen Gunter | TED
Why you're still tired after getting 8 hours of sleep
What would happen if you didn’t sleep? - Claudia Aguirre
How Much Sleep Do You Actually Need?
How Sleep Affects Your Brain
How To Survive A Day On No Sleep
How many hours of sleep do you need?
What Happens to Your Body on Little Sleep?
The brain benefits of deep sleep -- and how to get more of it | Dan Gartenberg
Too much REM sleep: why do depressed people wake up exhausted? | Human Givens
Why 4 Hours Of Sleep Is Terrible For You — Even If You Don't Feel Tired
How To Fix Your Sleep Schedule - Reset Your Sleep Pattern (animated)
What Happens if You Get Too Much Sleep? Health Risks of Oversleeping
Depression and Sleep