What is good rest? I get 80 minutes or more a night of deep sleep regardless of my morning caffeine intake. I almost always wake up well rested and still drink ~300mg of caffeine over the course of a day.
I didn't read the book, but from his interviews it sounds like all he did was gather N=1 over sufficient time to show it effects him. This is one case where I am going to have to appeal to authority. I have yet to see evidence your morning coffee is destroying your cognitive function. I have not experienced it either. Given my data is just as valid as his I would like to see actual controlled studies on this. In particular on the absolutely outlandish claim that 1/8th to 1/16th of the dose of caffeine remaining in your body does anything if you're consuming it only in the mornings.
I didn't read the book, but from his interviews it sounds like all he did was gather N=1 over sufficient time to show it effects him. This is one case where I am going to have to appeal to authority. I have yet to see evidence your morning coffee is destroying your cognitive function. I have not experienced it either. Given my data is just as valid as his I would like to see actual controlled studies on this. In particular on the absolutely outlandish claim that 1/8th to 1/16th of the dose of caffeine remaining in your body does anything if you're consuming it only in the mornings.