Don't actually think it was running 6 days a wk that caused mine, I can pin point it 2 one wk in particular, I had a cold + didn't run 4 3days then ran 8miles, 10miles and 14miles the following 3 days, that is when the 1st niggle set in. I then continued 2 run on it 4 2 months, as it gradually got worse and I hoped it would go away, then it suddenly went from niggly jaggy pain that came and went throughout run 2 constant pain everytime foot struck ground on my last run. That was nearly 7wks ago, I didn't go 2 doc or physio at that point, just rested. But when tried running again last wk had the same niggly pain I had b4 after few hundred metres so stopped immediately and made appointment with physio. Think main problem with this type of injury is it is very slow 2 heal due 2 limited blood supply so massage + accupuncture help. Tx