I still don't understand sleep, but, Walker breaks down sleeps benefits & shows the data to back up why we should be getting a full night's rest. He has given me a newfound respect for something I wantonly would throw away at my next personal whim. Silly me, it's been working against me the whole time.
Fewer late nights learning to code, and I'm making much better progress already in the memory department.
As for Cavey's book: Cavey takes a really interesting look at Jesus through a historical lens, coupled with all these little things I had missed in my own reading of the New Testament. It's full of goodies, and is one of those books I've got 20 copies of in my library to hand out like candy.
After reading about it, I've learned a lot more about sleep, but the greatest effect is that I really appreciate sleep more, make lots of time to optimize length and quality. Knowing all the info in the book it would be difficult to justify using an alarm clock to force yourself to rise before your body is ready.
Really cool book.