Why don't some people break their feet when they step on glass slag barefoot?
Because the soles of their feet are thick, after a long-term barefoot life without shoes and socks, their feet are tougher, so they will not break when they step on the glass. There is an iron-footed babe in Weibo, a girl who likes barefoot very much. She even lived barefoot when she was a student and completely abandoned her shoes and socks. Until now, she has been married and has children, and her bare feet remain unchanged.