Getting older sucks physically. My feet were killing me, too. And still do if I over do it. I found that if I stretch my feet by pulling my big toe toward my shin at night, thae pain all but goes and stays away the next day. Give it a try.
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine
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