Too much REM sleep: why do depressed people wake up exhausted? | Human Givens
The brain benefits of deep sleep -- and how to get more of it | Dan Gartenberg
REM Sleep - How Much Sleep Do You Need
Are You Sleeping Too Much?
The Danger of Sleeping Too Much
REM Sleep Disorder
How much sleep do you really need? | Sleeping with Science, a TED series
What causes insomnia? - Dan Kwartler
Soothing Sleep Music Relaxing Ambient Sounds for Deep Sleep & Restful Dreams
What happens when we sleep?
What Happens To Your Body And Brain If You Don't Get Sleep | The Human Body
How to Get More REM Sleep
How Sleep Affects Your Brain
2-Minute Neuroscience: Sleep Paralysis
Why you're still tired after getting 8 hours of sleep
Insomnia: why can't I sleep?
Dr. Matt Walker: The Science & Practice of Perfecting Your Sleep
Seen At 11: Chronic Nightmares Could Mean Serious Health Problems
REM Sleep behavior disorder
The surprising health benefits of dreaming | Sleeping with Science