This post originally appeared on the Crew blog. Last month, I came up with the brilliant idea of attempting to hold a forearm plank for fifteen minutes with just 30 days to train. For those of you who have never tried it, planking is a static exercise that is incredibly painful from start to finish. Which was exactly the point. I wanted to see if I could do something that was so far beyond what I thought I was capable of. Something_that required me to build the physical and mental strength toendure those slow minutes of intense pain. The science…

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