Like most runners, I’m a natural heel striker, but decided to try a little experiment at the weekend. I made the effort to run a couple of km on the treadmill by striking mid foot. Using a bit of concentration it didn’t take long to find a nice rhythm, and I was going pretty comfortably at about 5min/km pace at about 175 cadence. It actually felt quite nice. I did just over 2k but decided not to push my luck as I know it can add extra strain on the calves. Anyway, the next morning my calves were really sore, and I mean really sore! Nothing pulled, just felt like I’d done a long hard race. My question is this - has anyone else successfully managed to transition to mid foot running, and if so, how long did it take before the agony went away?