Did that this morning, on the way into town, only to have the traffic start moving again just as I did. I don't know whether the lead vehicle's driver was unobservant or just overly aggressive, but I had the unpleasant sensation of thinking, "I'm not going to make this." The van was getting closer to me faster than I was getting closer to being past it. Naturally, I was trying to accelerate too. I'm thankful that the van *did* slow before hitting me. I didn't even get a blast from the horn, which would have been entirely understandable since this was All My Fault.
Anyway, point is, the sudden "must run faster" bit caused a nasty wrench in one of my knees (which have never been great, that being the reason I don't do any fencing styles that involve lunges). Oh good, I thought; that's something *else* broken.
It's still feeling sprained ten hours later, which isn't a good sign, and the kneecap needs clicking back into place more often than usual. Uh-oh.