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Are there many hills where you walk? My hometown is all hills, and I tend to get a bit of a tight burning feeling sometimes from walking.

Yeah not hills per se but it's quite up and down on almost every road, not too much elevation, I guess the highest was something like 20 degrees.

Ahh fair enough. One thing that kind of helped me was getting a good pair of trainers with arch support. I live in boots or DCs and they're both pretty flat, and I noticed a big difference after switching.