Sleep is something that every human being on the planet does every day. We complain about not getting enough or some individuals getting too much. Some people say they can survive on very little sleep while others say they can't function without 7 or 8 hours. But how many of us really know what is therapeutic about sleep and why?

Here is additional information linking poor sleep with cognitive disorders and even Alzheimer's Disease.

https://www.medicalnewstoday.com/articles/318273.php