[karky]

Whenever I run, my calfs tire, get stiff and hurt very quickly. It's actually so quickly that I doubt it's "normal fatique" I think there must be some kind of imbalance or something as it's almost instant. It limits the duration of my runs more than my cardiovascular ability, which is really annoying. Anyone ever had this? It doesn't seem to get better as I train either; it still gets tired and stiff as soon as it did when I started training.