Too much REM sleep: why do depressed people wake up exhausted? | Human Givens
REM Sleep - How Much Sleep Do You Need
Is Too Much REM Sleep An Issue? | Cabral Concept 2336
REM Sleep Disorder
The brain benefits of deep sleep -- and how to get more of it | Dan Gartenberg
Mastering the Art of Sleep: Finding the Perfect Balance of Deep, Light, and REM Sleep
REM sleep: is too little REM sleep DANGEROUS?!
How much sleep do you really need? | Sleeping with Science, a TED series
Is hitting the snooze button bad for you? #sleep
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
Deep Restorative Sleep vs Light Sleep vs REM Sleep: Differences Explained.
REM sleep critical for emotional and mental health
Are you Getting Enough Deep Sleep?
"Get Quality and Sufficiently Long Deep Sleep" by Dr. Andrew Huberman
THIS is Happening in your Brain During REM and Non-REM Sleep
Why you're still tired after getting 8 hours of sleep
Dr. Matt Walker: The Science & Practice of Perfecting Your Sleep
Are naps actually good for us? | Sleeping with Science