Calf - aching

My calfs are aching now! I do not know why! It is like this on Saturday and Sunday after the run.

It is not that i have pushed hard, but still having stiff calf! The only conclusion i can draw is due to the blood donation. Somehow i have not experience this in my previous blood donation. I have much tougher training before and didn't experience it neither.

Let see how it feel tomorrow.