I love non-fiction books that myopically focus on a particular thing like salt, cod, sleep, and so on. It's an opportunity to really dig into a subject and focus on something in a way that we so rarely do.

The Secret Life of Sleep is a surprisingly poetic take on that. In addition to some history and contemporary science, it also features a lot of philosophy and a bit of memoir. The result is the book where I perhaps learn fewer facts but really enjoyed the experience.

Excellent book about the bodies need for sleep and why it can be elusive for so many. Anyone with sleep.problems should read this book.