Don't judge a person by appearances. I use to do that and now I have MD. You wouldn't know it by looking at me but I can't feel my feet so walking and standing are difficult. I also have trouble balancing. You might see me carrying a bunch of two by fours because I'm not an invalid. It might be difficult but if you don't use it you will loose it.the moral,of the story is don't judge people because you could end up in their shoes or worse. Take it from someone who knows.
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