Jiu Jitsu prepares many flavors of pain for us. One of the most bitter flavors of pain comes from a revelation. Jiu Jitsu reveals our physical limitations.The Crypt of the Capuchins. Rome, Italy.I became acutely aware of these limitations when I turned 32. Double or triple training sessions left me, best case, feeling half-assed and, worst case, sick or injured. I had to back off. I had to slow down. Granted, this is not the case for everyone, but I was running up against the limitations of m...