I parked up at the supermarket on the way home tonight and it had started snowing (again) so I started a little jog across the car park and almost immediately got a pain in my left knee. I've never had so much as a twinge before so it pulled me up, I was ok walking and using the clutch but I've come in now and just bent down to go to the fridge and as I straighten it's there again. I ran stepping stones and really struggled on Monday (excesses of a hen weekend) but I don't remember any issues with my knee. Should I run or rest tonight? Anything else I should be doing? Don't want to sabotage myself for the 5X50!!!!