I CAN ONLY WALK A FEW FEET DUE TO BAD KNEES. WHAT WILL I DO TO PREVENT BLOOD CLOTS?

I walk from house to car w/two canes. That's it. Has anyone used an Oxy-Flow machine at home? I have one and it is supposed to put oxygen into your legs. My legs tingle after usage. How will I exercise? Any thoughts?

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