In the last nine years since I resumed riding, I have been down once, three years ago. I was out early one morning following a couple week period of constant rain, I hit a wooden plank train trestle in a sprint and was down in an instant, hard on my right side, sliding along for 20' or so. No broken bones but extensive bruising on my right arm and leg.
I read here of people who have been down multiple times, it confuses me a bit.
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nine mile skid on a ten mile ride