I can run without my back hurting! Hurrah! 3.5 slow ones around the neighborhood in some of the warmest weather we've had yet this year.
My knees, however, were another story.
I experienced a curious phenomenon.
Did you know that pain can jump from one knee to the other, directly? Like you can be running along on level pavement and one knee is hurting a LOT, and then all of a sudden, *POOF*, it's fine, and the OTHER knee starts hurting just as bad?
It can happen.
Now normally one would think it would need to be transmitted through the body, like being referred through your crotch, or something.
But no, it can jump from one knee to the other directly. Through the air. Immediately. With no temporal delay.
Now I'm not quite sure of the mechanism for this, probably something electromagnetic, but it is a True and Valid Phenomenon, because I experienced it. And that's all the evidence that is necessary to prove something exists, right?