Too much REM sleep: why do depressed people wake up exhausted? | Human Givens
How to Stop Oversleeping | wikiHow Asks an Expert Sleep Doctor
Can You Sleep Too Much? (The Answer Might Surprise You)
How much sleep do you really need? | Sleeping with Science, a TED series
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
Can You Get Too Much Sleep?
Why Do I Feel So Sleepy Despite Having Enough Sleep? – Dr. Berg
The brain benefits of deep sleep -- and how to get more of it | Dan Gartenberg
What happens when we sleep?
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How Sleep Affects Your Brain
Insomnia: why can't I sleep?
How To Take The Ideal Nap And Avoid Bad Sleep
How To Survive A Day On No Sleep
How to Sleep Less and Get More Out of Your Day- Thomas DeLauer
Why 4 Hours Of Sleep Is Terrible For You — Even If You Don't Feel Tired
Excess Sleep - Causes, Effects & Solutions I Dr. Medha Kapoor, PhD