Productive on six hours of sleep? You’re deluding yourself, expert says

I recently watched a two hour interview of Dr. Matthew Walker, a neuroscientist and sleep researcher, and was so impressed by the information that I read his book. I had known there were detrimental effects of sleep, but I like many was unaware of how profoundly these could effect our physical, mental, and emotional well being. I can now see that decreaed quantity and quality of sleep is a large public health issue.
Has anyone suffered detrimental effects from poor sleep?
Productive on six hours of sleep? You’re deluding yourself, expert says