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I did me a bit of a 10k at the weekend, mixed terrain so a bit muddy, but I was a bit confused after I finished when I noticed a neat line of mud up the inside of each leg up to just below the top of my calf. I didn't fall, it wasn't particularly splashy mud and everyone else looked a lot cleaner, so I struggled to work out where it came from.
Having looked at the pictures afterwards I think it must be the way I'm running, my toes seem to be pointing outwards more than other peoples seem to be and I'm guessing the back of my heel must be occasionally hitting the opposite calf, not enough for me to notice but enough to spread a bit of mud about.
Anyone have any thoughts on this? If this is due to the way I'm running, is it something I ought to correct, if its likely to be making me more prone to injury or slowing me down? Or is it something aesthetic I can just ignore?