system
Given the following post, respond as if you're commenting on Reddit:
human
Is the skin under your foot naturally tougher than that of your body? Or is it toughened by walking?

I did Google this, but couldn't find a relevant search result. 

Basically, are you born with feet that have naturally tougher skin, or does that tough skin (The soles) come from conditioning your foot through walking? 

If I were to have never walked since birth, would the soles of my feet still have a tougher, thicker skin than the rest of my body?
gpt
Both! The palms of your hands and soles of your feet have an extra skin layer (stratum lucidum) that isn't found anywhere else on your body. However, the skin will also thicken in response to stress (walking barefoot, excessive rubbing) to protect itself.