alt Hacker NewsIt's our evolutionary background.
Land animals first evolved intelligence when we emerged from the cloudy, murky sea and developed the ability to see shapes (predators, prey) really far into the distance. This required the ability to understand the future and perform spatial reasoning. Not all aquatic species were exposed to such pressures (opportunities), since line of sight vision (especially traveling at speed) is limited.
We got really smart when we became endurance hunters and out-walked and out-ran our prey. Bipedal locomotion and sweating were clutch advantages for sure, but our brains became especially attuned to multi-tasking when walking and running. We could see our prey far into the distance and could plan hours in advance for how to exhaust and corner it. Especially as a group activity. This engaged spatial, temporal, collaborative, and complex reasoning.
We didn't evolve to think at a desk. We evolved to think because it greatly enhanced our hunting skills and survival fitness.
When you walk or run, you're directly engaging machinery that was fine tuned over hundreds of thousands of years.
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There are highly intelligent species such as whales and dolphins, which cannot walk nor run. There are also highly intelligent species that generally do not walk, such a octopuses and birds. Also you skipped other ways of locomotion, such as crawling and climbing. Sure locomotion is crucial, but it's not a simple just a switch to walking. You made it seem like intelligence is only about walking and running, but in reality intelligence was acquired as a long process of various adaptations. Other examples for crucial adaptations that are completely missing from your narrative would be communication, prosociality, or tool-using
I’m always very cautious of “evolution” as a justification for any health/wellness advice. I’d like to preface this point by saying I am a fan of daily walk, and do about 30mins of very hilly terrain daily. I just don’t like your argument for it.
1. It’s really easy to create a fictional narrative of what our ancestor’s activity was 50k years ago because of the lack of empirical evidence. The truth is we know only a little and guess at a lot.
2. It’s been associated with many false claims. So many fad diets, fad supplements, and fad exercise routines have made use of evolution to build a narrative of why it’s healthy. I’ve seen both carnivore and vegans use evolution to explain why their diet is correct.
3. The modern environment is just different than the pre-historical environment. We have clean drinking water, unlimited sodium, modern medicine, air conditioned and heated shelter. To me the real question is what is the healthiest decision for me, not what is the healthiest decision for someone 50k years ago.