This question always comes to mind whenever I see people jogging along sidewalks, and wonder. Sidewalks are generally concrete or cement or something, which is definitely harder than dirt, so…

  • guyrocket
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    fedilink
    21 year ago

    I’m seeing that this matters for running but how about walking?

    • @baldingpudenda
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      31 year ago

      Walking is much lower impact. IMO you should be fine.

      • Cosmonaut_Collin
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        151 year ago

        What about sprinting on all fours? I think Shia Labeouf is tailing me and I’m considering finding a sidewalk if it will ruin his joints.