Poor ergonomics are almost non-existent in traditional cultures. This makes some intuitive sense as only in a wealthy industrialized society is poor posture and

Poor ergonomics are almost non-existent in traditional cultures. This makes some intuitive sense as only in a wealthy industrialized society is poor posture and back/leg weakness de-correlated from surival. This is one starting point to research it: https://www.npr.org/sections/goatsandsoda/2015/06/08/412314701/lost-posture-why-indigenous-cultures-dont-have-back-pain https://www.npr.org/sections/goatsandsoda/2015/06/08/4123147...