Calf Strains and Pains

Been a long while since I experience serious pain from running.  Been trying a lot on short distance speed running lately.  The first strain came when I was doing speed work just last week at the tracks.  Doing the Pyramids ( 400m , 800m, 1200m at maximum effort ) and coming down.  I broke around the fourth set.  The pain is something really new to me as I had always been very careful not to over exert, even during longer races, I had hardly experience such form of pain.

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