Scrambled thoughts for now:
The good- it gives you what you want from a pop psych book. There are lots of studies, theories, etc explained in accessible language. I really liked the parts about how the our bodies affected both brain evolution and development. There were a lot of things I realized about body-minds that I had wrong. I also feel more motivated to push myself movement wise (I have chronic illnesses/disabilities aggravated by exercise and an always trying to find the balance because they're also aggravated by being too sedentary. 🙃) It also made me think about books like waking the tiger and how other animals shake and move to healthily process a trauma then go on with their lives.
The mediocre- he discusses some important things like racism and bias and provides good sources to back up what he's saying. But, I found some of his arguments to be shallow. Perhaps that's what you get from pop sci books. For instance, I wish he'd have discussed the origin of the concept of race (used to divide the poor, etc) rather than just saying there's no basis to divide by race, etc.
He mostly focuses on human research which I appreciate. But, when he discusses (some of the most historically awful) animal research, there's no acknowledgement of that suffering past a result on a paper.
The bad- he's a bit obsessed with the "obesity epidemic" and describes body size as basically entirely about the fat person's choices (which are of course bad in his eyes.) There's plenty of research showing fatness also has genetic, environmental, biological, etc causes but he didn't mention those. For instance, there's research that people in the USA are fatter due to long term effects of ddt being all around us, prevalence of autoimmune disease, the processing of our available food being unhealthy, the food available to the poor being extremely limited and often unhealthy, work environments that do not allow for movement or which cause injury, lacking healthcare or care bias, etc. Not to mention how yoyo dieting tends to make people fatter over time (fat people usually diet more than everyone else contrary to popular belief.) Also, fatness is fine. Neutral. For the record. He could have simply sent the message that everyone should exercise however they can and how joyful movement is critical for our health and well being. That's true for everyone of every size.
He falls into false evo psych thinking at times which is at odds with other arguments or simply just heteronormative patriarchal sort of minimization of history and human behavior. It's sparse and certainly not the worst I've seen.