I took a fall on the ice and banged my knee pretty good a few years ago. It was a minor thing, but it really opened my eyes to how fast a fall occur, and how little control I might have when it happens. I am in decent shape, I have good reflexes and range of motion, and I thought I knew how to fall and how to avoid injury. That day I learned that's not always the case. One moment I was moving along at a brisk pace, and in the blink of an eye I was on the ground rolling in agony. It took a moment to even process what happened.