I don't know if it's shin splints or just pumped shins and/or if there is a difference. One thing I tried that worked for a while was glutamine. I was taking creatine along with the cycle and had the problem on the treadmill. Then I read about glutamine reducing lactic acid buildup, so I tried it. The treadmill problem subsided for a while, so I figured the glutamine was working. Eventually, however, it came back . . . not as bad, but still to the point where I didn't bother doing the treadmill during the cycle. I don't know what would happen if you just jacked the glutamine dosage up, but those who have this problem (during cycles) and don't take glutamine yet should try it and see if it helps. I would be interested to know if it does.