I have just retired a pair of Nike Air Pegasus for Adidas Calibrate and upped my mileage over Christmas - now I have a recurring shin problem. I have rested (1 week) doing pilates and cycling to keep core strength. Just tried a 2 mile easy to test my shin and it still hurts - not so I can't walk or run, but just enough to remind me that its there. Should I just run through it or rest for longer . . . or even see a physio??