dynamic of

genetics/evolution

natural selection/environmental stressors

altitude/geography/diets/culture

bone density
tendons
lungs
liver
glucose metabolism
hemoglobin

etc https://image.nostr.build/1f21dcd0860c8de46e3739ca72c8bda3d57a6ba716496f83ae8d71d8a5a3edb7.jpg https://image.nostr.build/b09cbd95eeff25174b69beb552dc895c507df0a5cde36a97d1d55e18d860f0d6.jpg https://image.nostr.build/23adc3a7508500c394aa203fb24c6e9027aeaae8418bb62b57e182174f2ed505.jpg https://image.nostr.build/2096106eb2713b4f6ae72bdf172fb4a8a67dcbc3db2cfc20d30a5a2db5c3e04f.jpg https://image.nostr.build/d6746eb03205e8b9458a9fc26e6c851ba8671dd0d47608a4d1dfab1d9a84d77b.jpg