Anyone have any experience with this, particularly in the quads? Don't feel sore but in the middle of a run, my quads really started to hurt on every step. I had to finish the run, as I was in the middle of it but ran very slowly. This happens more often that I'd like but I don't know why this is happening, as I do normal / low mileage and sleep / eat correctly.
How is your strength training set up? If you get out of balance with not enough quad work relative to hamstring work your body won't like that. I know from experience. I tried to focus on hamstrings for forward propulsion but my quads gave up on runs.
Something like this happens to me too. The quads feel like they're tightening up after a few miles. I haven't found a solution to it yet but simply stretching more after every run seems to help some. Drinking more water might not be a bad idea either. Otherwise, it might have something to do with strength training, maybe lifting too often, too heavy, etc. How much strength work do you do?
low ferritin