For a while, the only shoes I could wear when walking my dogs outside were dorky-looking tennis shoes — and I’ve never played tennis! They were flat, wide, and sturdy. If I walked in running sneakers, which have a different shape sole, my knees felt as if they were swelling up like bal-loons, and my feet were burning in pain during a walk. On a treadmill, my feet and knees are happiest in five-toe Vibrams. I won’t wear anything else. Don’t just accept the pain. Find the shoe that works for you.