It's hard to summarize. There is a lot of data and a lot of stuff to cover. I'll grab a couple of parts for you and I hope others can summarize others for you.

It's hard to summarize. There is a lot of data and a lot of stuff to cover. I'll grab a couple of parts for you and I hope others can summarize others for you. :) Why we need sleep: Your brain needs sleep because your brain uses it to organized and optimized the experiences of the day. Without sleep your brain is unable to support new learning.