Peak Human Clock: How to Get up Early, Fix Eating Time Schedule, and Improve Exercise Routines to be Highly Productive

Had Me Pulling My Hair Out at Times — Oh, where to start! I had issues starting with the introduction. The author gives two examples of people, one who lives perfectly attuned to what the author believes will achieve the peak human clock and one who does it completely opposite. Life is never that black and white; people usually have a mix of habits, both positive and negative. And I loved that the guy who supposedly did everything right ate dinner at work at 5 and then left for home at 6! Seriously, does anybody do that? And interestingly, this is not what the author suggested later in the book about eating! The book is divided into three sections after a chapter on circadian rhythms: sleep, exercise, and eating. While the author does have some study references, much of what he claims as “scientific” fact is not backed up by any research at all. I think much is simply his own opinion, perhaps based on his experience or gleaned from nonscientific blogs. As a nurse who has studied some of these topics in-depth, I hate seeing scientific subjects not backed up with legitimate references. Just because something sounds “science-y” and factual... doesn't mean it is! This book certainly had some outright scientific errors and places where the science was over-simplified to the point of being wrong.... as well as the multiple statements of “fact” not backed up by studies or credible references. While the author states this book is all about creating ideal circumstances for the peak human clock, i.e., working with your body's natural daily time rhythms, the section on exercise doesn't address that at all and the one about eating only minimally so. A nonfiction book should be what it promises in its title and subtitle, and this one is not. The author's writing was awkward at times, too, with wrong words and tortured phrases. Like most books I read about productivity or better living patterns, this one gives short shrift to those who work swing or night shifts. From a statement made in the introduction, he seems to think that we all can just shift our wake/sleep schedule if we want to. Not so for shift workers! -- I received a free copy of this book, but that did not affect my review.

I was skeptical with any diet or health book. But this book provided more than just the theory. It came with the scientific explanation of why. That's nice to learn. We have all been bored with too many fad theories on health that we become unsure which one is right to follow. Now it makes sense why some people are still fat even after adopting healthy diet. The book also covers the best time for everything. It never occur to me that there is certain time of the day when we are most productive at certain tasks. Well worth the time to read this. I'm buying this book for my father as the father's day gift.

If there is anything that I will change right now, it is to start paying attenttion to my sleep and eating schedule. How do I miss something so basic all this time? Said pointed out how working with our circadian clock benefits our mind and body, which in turn surges our productivity. The book distilled the steps to maximize our routine by planning it in accordance to our own body's clock. Skip that afternoon dip, and you save yourself 1 hour of time a day. I especially like the chapter about getting quality sleep. I will definitely give the techniques a try to wake up without an alarm clock.