3.0
informative

Walker compiles a readable overview on why we sleep, its function, and its impact on our health, memory, and behavior. Great points are brought up throughout the book, and he wraps it up by providing suggestions on how to potentially improve society's relationship with sleep. I particularly liked the ideas of using biometrics through FitBits or a similar medical device to track our sleep quantity and quality, as well as pushing back school start times to better align with teenagers' circadian rhythm.

While there were genuinely useful takeaways, Walker makes some bold claims that have been proven to be kind of cherry-picked or even completely incorrect. A writer named Alexey Guzey compiled a list which summarizes the factual errors found throughout which cheapens the book a bit.

Overall, would recommend the audiobook - just make sure to take some points with a grain of salt and (as always) look into claims he makes yourself.