ttc wrote:
It's been shown a very high % of the world's best distance runners come from altitude. So the question should be posed to the author: Why? Just a coincidence? Would the author argue that those Africans would still be dominating, if from sea level? There are benefits to both altitude & sea level. But it seems proven growing up in altitude and then incorporating some sea level, is better than the other way around.
generations grew up at altitude
Most people at the front of a race can speak Swahili but learning to speak Swahili won't make you a better runner.