Been reading about homo erectus and why their bodies evolved into an upright stance. The theory is that they needed to run to chase down their prey; over a long distance they could single out a gazelle, say, from the herd and gradually wear it down and it would die from heat exhaustion through being continually chased. The gazelle was faster but homo erectus could run for longer.
Got me thinking what I could chase down and eat: Slugs? Too chewy. Snails? Too crunchy. Slow worms? Too rubbery. Hmmm, might have to become a veggie.
My husband went to the doctor with bad back and was told he was a fat b@*#^#d and he could catch a horse because he had enough fat to live on but the horse would have to keep stopping to eat! True story believe it or not !!!
I think I saw a documentation a while ago, and the theory is that most animals can't cool themselves very effectively so as long as the runner can track them for long enough the animal dies of heat exhaustion.
Based on my speed of running I would have trouble catching a cold :-).
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