People who often go barefoot develop thicker skin on the soles of their feet for protection – but unlike cushioned shoes, thick skin can still sense vibrations
Source:
https://www.newscientist.com/article/2207719-barefoot-walkers-have-tough-feet-but-sense-the-ground-just-as-well/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home