????????????????????????

????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????…

(image credit: livinggreenmag.com)

????????????????

?????????????????????????????? 3,500 ?????????????????? 7,000 ?????????????????????? 350???????????? 100 ???????

????????????????????????????

?????????????????????CDC????????????????????34%???????29.5%????????????????????????????????????????????????????????????????????????

?????????????????????????????????

?????? “competitive walking” ????????????????????????????????????????????????????????????? Up Up ????????????????????????????????

??????????? “Champion Pedestrian of the World” ??

????????????????image credit: npr.org?

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