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The surface you are running on may play a role in how your body reacts. There’s an often quoted study co-authored by Southern California podiatrist John Pagliano that states… "… one of the five leading causes of injury is "improper" running surfaces........concrete is approximately 10 times harder than asphalt, so all your bones, muscles and ...


4

Your problem might not be with the hardness of the ground you're running on. If you run on a sidewalk that is on the same level on the road you shouldn't see much difference. I think the issue here is the fact that sidewalks are not as straight as paved road. Most sidewalks have bigger slopes going down, up, then back down again. And the sidewalks stop when ...


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While concrete may be a harder surface than asphalt, other than preconceived perceptions, there is not an appreciable difference in deflection (Force returned from a surface) between concrete and asphalt. There is a difference between grass, dirt, rubberized track surfaces, etc., but between asphalt and concrete any difference that you perceive is ...


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"...it feels like they get stuck/stay flexed at the beginning and only when my whole hand is almost opened they get unstuck/unflexed very sudden and harshly." What you described sounds like a case of trigger finger. It’s a pretty common overuse syndrome and may have some wrist involvement. From the Mayo Clinic... “People whose work or hobbies ...


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Several years ago I began feeling a sharp pain in my left shoulder (behind my deltoid muscle, near the joint) during chest exercises. At first the pain was minor so I kept with my normal weightlifting routine. Over the next few weeks, however, the pain became progressively worse. It finally reached a point where I could no longer do any chest exercises (or ...



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