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
Is Too Much REM Sleep An Issue? | Cabral Concept 2336
Mastering the Art of Sleep: Finding the Perfect Balance of Deep, Light, and REM Sleep
REM Sleep Disorder
How much sleep do you really need? | Sleeping with Science, a TED series
Welcome to a Good Night's Sleep | Let the Sound of Rain Dispel All Fatigue for a Fast and Deep Sleep
What's REM Sleep - How Much Do You Need?
REM sleep vs. deep sleep and their importance for cardiovascular and emotional health | Matt Walker
The Danger of Sleeping Too Much
How to Get More REM Sleep
What Happens To Your Body And Brain If You Don't Get Sleep | The Human Body
How to Get Deep Sleep | Deep Sleep Tips | Are You Getting Enough Deep Sleep
Why you're still tired after getting 8 hours of sleep
The surprising health benefits of dreaming | Sleeping with Science
Are you Getting Enough Deep Sleep?
Lack of REM sleep linked to higher risk of dementia, study finds
What happens when we sleep?
"Get Quality and Sufficiently Long Deep Sleep" by Dr. Andrew Huberman
REM Sleep behavior disorder