I have always felt that this is a myth or misconception. Humans probably evolved as distance-running specialists [1] so it would be pretty strange if our knees

I have always felt that this is a myth or misconception. Humans probably evolved as distance-running specialists [1] so it would be pretty strange if our knees were some sort of exhaustible resource as seems to be the popular idea. If people have trouble with their knees, I think there are lots of potential explanations, for example running too far or too fast before building fitness, which includes conditioning of stabilizer muscles in the knees, or poor running form caused by lack of fitness or encouraged by modern running shoes. I'm a bit biased, but I don't like to see the sport of running blamed for these things. [1] https://en.wikipedia.org/wiki/Endurance_running_hypothesis https://en.wikipedia.org/wiki/Endurance_running_hypothesis