When it comes to human body parts, some are more sensitive than others.
Lips and hands, for example, easily gather detailed information via sensory neurons. This is a vital survival function that enables us to safely navigate the world, from detecting a scalding cup of tea before taking a gulp, to noticing a bath is ice-cold before jumping in.
Thighs and forearms are at the other end of the spectrum of body parts, being much less sensitive.
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