The Mashed-up Ancient Angle

Humans spent hundreds of thousands of years moving around a lot outside, sleeping fairly long hours by the solar clock, and eating lots of plants and animal foods—and we carry largely the same software code inside ourselves today (human genes) as humans did back then. The closest approximations to an ancient person now are contemporary hunter-gatherers like the Maasai or the Hadzabe in East Africa, and they tend not to get our diseases.

Maybe a good part of fitness is simply getting back to our roots—not corrupting our own internal software by immobilizing ourselves in chairs, in cars, or in front of screens, moving around under the sun (making vitamin D), taking the time to sleep, and eating real food. Maybe.