I imagine this person, and most modern humans, would not survive in a low-tech situation. The show “Naked and Afraid” is pretty good to get an understanding of why: not enough food. You “win” the show by surviving as a duo for 21 days, contestants have been failed for minor cuts and sleeping under a poisonous tree, among other issues.

The most successful dude I’ve ever seen on the show got put on an island covered in mice. His strategy involved setting up some rocks and the mice kept knocking the rocks over and killing themselves, which he would then prepare to eat. His co-survivor actually complained that he was catching so many mice that it was keeping her up at night. One of the only contestants to ever gain weight. He did get some leg cramps while swimming to the rescue near the end, otherwise 9/10 performance.