Interesting article in the latest Seed Magazine about running. Evolutionary biologists posit that humans evolved to run marathon distances, citing various anatomical features and dietary evidence. Why would distance running be a desirable trait? Possibly to run down prey in pre-weapon times --- Persistence Running. Neat.
From the article:
"...comparing speed, body temperature, and body weight of humans and various conceivable prey. A deer and a decently fit man, Lieberman discovered, trot at almost an identical pace, but in order to accelerate, a deer goes anaerobic, while the man remains in an oxygenated jogging zone. The same is true for horses, antelopes, and a slew of other four-legged creatures. Since animals can run anaerobically only in short bursts before they must slow down to recover, a human in pursuit may have the final advantage. And because quadrupeds can’t pant while they run, they also quickly overheat... [it] might simply have been a matter of spurring the poor beast into a sprint enough times to make it collapse from hyperthermia."
So next time some old crotchety person ridicules you for training for a marathon because it is too hard on the body, feel free to point out that we all may have been built for it.
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