But in the Times article--headlined "Getting Fit, Even If It Kills You"--Glassman used the kind of tough-guy talk he used to shout at CrossFitters during their WODs. "It can kill you...I've always been completely honest about that," he said. "If you find the notion of falling off the rings and breaking your neck so foreign to you, then we don't want you in our ranks." Punctuating his blunt attitude, he had led his October journal article with a cartoon of a new clown, Uncle Rhabdo, who stands exhausted before a dialysis machine, his kidneys splattered in a pool of blood. The Times mentioned that, too.
Adoption of the Paleolithic diet assumes that modern humans can reproduce the hunter-gatherer diet. Molecular biologist Marion Nestle argues that "knowledge of the relative proportions of animal and plant foods in the diets of early humans is circumstantial, incomplete, and debatable and that there are insufficient data to identify the composition of a genetically determined optimal diet. The evidence related to Paleolithic diets is best interpreted as supporting the idea that diets based largely on plant foods promote health and longevity, at least under conditions of food abundance and physical activity." Ideas about Paleolithic diet and nutrition are at best hypothetical.