Why you're still tired after getting 8 hours of sleep
Why Do I Feel So Sleepy Despite Having Enough Sleep? – Dr. Berg
Can You Sleep Too Much? (The Answer Might Surprise You)
How much sleep do you really need? | Sleeping with Science, a TED series
What happens when we sleep?
Too much REM sleep: why do depressed people wake up exhausted? | Human Givens
Do You Really Need 8 Hours of Sleep Every Night? | Body Stuff with Dr. Jen Gunter | TED
Why You're Always Tired - 7 Myths Ruining Your Sleep
Depression and Sleep
Why Do We Have To Sleep?
How Sleep Affects Your Brain
Can You Get Too Much Sleep?
The brain benefits of deep sleep -- and how to get more of it | Dan Gartenberg
How to Sleep Less and Get More Out of Your Day- Thomas DeLauer
How many hours of sleep a night do I need?
Your Phone is RUINING Your Sleep
Pulling an All-Nighter vs. 2 Hours of Sleep: Which is Worse? – Healthy Living and Diet Tips–SELF
How To Survive A Day On No Sleep
Science Explains How Much Sleep You Need Depending on Your Age
How To Fix Your Sleep Schedule - Reset Your Sleep Pattern (animated)