you're missing the point. improper use of your feet causes problems up the whole skeletal structure. hips, knees, ankles, back, etc. LOTS of old people I've see

you're missing the point. improper use of your feet causes problems up the whole skeletal structure. hips, knees, ankles, back, etc. LOTS of old people I've seen have problems with bad hips, knees, etc. The theory is if we strengthened our foot muscles and such, there would be less load on the muscles further up the body so to speak that are compensating for improper balance or gait. basically your feet should be handling those functions, in extremely thick shoes, the feet aren't doing their job as well.