I am just 4 weeks into the programme - really proud of myself as have never done anything like this before. One niggle - when I am running I get pains in my in-step (a bit like a cramp pain) which spreads up my foot and into my lower shins. As soon as I stop running the pain goes. I bought running shoes and walked them in for 4 weeks before I started running. Anyone any ideas what might be causing this?