Evolutionary biologist Marlene Zuk writes that the idea that our genetic makeup today matches that of our ancestors is misconceived, and that in debate Cordain was "taken aback" when told that 10,000 years was "plenty of time" for an evolutionary change in human digestive abilities to have taken place.:114 On this basis Zuk dismisses Cordain's claim that the paleo diet is "the one and only diet that fits our genetic makeup".
In July 2016, a New York Times article on use of Instagram by dieters noted that participants in the Whole30 program had shared over one million Instagram posts using the #Whole30 hashtag, and noted that those sharing the tag were "one of seemingly endless like-minded communities," comparing it with the over 3.5 million posts under the #WeightWatchers hashtag.
The night before, he had rolled up with his entourage about 20 minutes late to a packed lecture hall of 500 CrossFitters at the University of Washington campus. He had been invited to speak there by the Freedom Foundation, a local libertarian group. Libertarians love CrossFit. It's neither a wholly owned chain of gyms nor a franchise, but the nucleus of a sprawling worldwide network of entrepreneurs. A local CrossFit gym is referred to as a box, because it can be anywhere and any style, and the culture of any box may be nothing like that of Glassman's company, or of any other CrossFit box. Boxes may even have different business models. And yet, there in the audience was the order spawned from the chaos: rows and rows of passionate CrossFitters, united in their love of the WOD, their muscled physiques rippling beneath T-shirts and hoodies.
The Whole30 book is the perfect thing to read while you’re visiting your in-laws or don’t feel like telling Aunt Sue for the 100th time what you do for a living. It’s helpful, it’s clear, and it will get you motivated. Want even more Whole30 recipes? Hartwig's latest Whole30 Cookbook may not have the nitty-gritty plan details, but the recipes are baller.
CrossFit is promoted as both a physical exercise philosophy and a competitive fitness sport, incorporating elements from high-intensity interval training, Olympic weightlifting, plyometrics, powerlifting, gymnastics, girevoy sport, calisthenics, strongman, and other exercises. It is practiced by members of over 13,000 affiliated gyms, roughly half of which are located in the United States, and by individuals who complete daily workouts (otherwise known as "WODs" or "workouts of the day"). CrossFit has been criticized for allegedly causing people to suffer from unnecessary injuries and exertional rhabdomyolysis.