The politically incorrect advice I would (of course never) give is this: go to the pub for a drink
in the morning.

This books is a revelation. It describes in a vivid way what happens when we don't get enough sleep(it's worse than I imagined in my wildest dreams). Lack of sleep disrupts learning, memoryformation, compromises immune system and contributes to various ailments. It even diminishesvaccination efficacy which should have been something that I would have been useful for vaccinationplanning for Covid-19 I would hope. And it does not take much to reach the "lack of sleep" stage.We as human society have completely self-sabotaged our ability to sleep properly. Lighting(especially LED), early morning work and school schedules, keeping our bedrooms too warm andmore...I will note that while Mr. Walker does often point out unfinished or unclear science it's not alwaysclear. Certainly take some things with a grain of salt and careful scepticism. But even if only halfof the things is true, I'd want to sleep properly to avoid the damage. What's the downside?Congratulations Mr. Walker, you have a convert for your sleep revolution. I will look for ways tomake my sleep better going forward.