I'm not sure if you would know this but I'm concerned with my joints and bones, specifically my knees and ankles. I've been jogging hiking trails for the past 3 years or so and I particularly like running down trail and it can get pretty rocky. Will the extra pressure on my bones be detrimental in the long term? I'm worried about my knees or even my back when I'm 50 (im 21 now if that has anything to do with it).
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