Well, I've read a lot of health related books. I follow a fair number of health podcasts. I've heard a lot about what nasty effects alcohol inflicts upon the body. None of it made me change my mind and stop having a drink at night to relax. This book ended that without question for the foreseeable future. I won't spoil the riveting plot of this tale, but suffice it to say that my assumption that learning just becomes harder as you age might be a mistake or a partial explanation. I've only been drinking alcohol for the past 5ish years and it strongly correlates with my slowdown. Anyways... great book, and there's much more than I've talked about in it. Sleep is King.