My annoying calves hurt?

I have been having calf issues...

I have really muscular calves...and it seems like I pulls a muscle every time I try to stretch my legs...just for this pass week...I have had like 4 charlie horses...what is causing this?

Yes, I suspect..it might be strain from this new workout thing I am doing...but I wonder why because I thought stretching muscles prevents this **** from happening.
My annoying calves hurt?
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