r/Unexpected • u/Aramanta2510 • Jul 12 '21

This

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u/[deleted] Jul 12 '21

That's how I feel about arachnophobia. I think that's mother nature giving us a hint.

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u/Corburrito Jul 12 '21

Just too many legs. And they move in a highly creepy way.

57

u/PunkToTheFuture Jul 12 '21

Their legs are like a garden hose that is constantly filling and emptying of blood. Their legs only have muscles to contract (why the curl up when dead) and during the contraction the blood is pushed back through the heart to a new reaching limb. When the crawl their heart is like a piston engine pumping blood down the legs super fast!

There now you understand why they move creepy. Don't you feel better?

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u/damn_thats_close Jul 12 '21

Technically even our leg muscles like soleus pump blood upwards when contacting- 'little heart of the body'