Because those involved here are old people, the years have "weathered" their bodies into particular shapes, and they certainly aren't in the habit of paying attention to the "feel" of their own bodies.
因為現在的對象是老人，身體經過歲月的磨蝕，早已「風化」成某種造型，更別提注意自己「身體感覺」的習慣了。