Running makes you stupid

I have a policy that I don’t run if it is colder than -20 degrees. Lately I’ve been ignoring that, and I really don’t have a reason why. It sounds like a good theory.
Today the traction was hell, visibility is less than a kilometer, it is -21, but with the wind chill it is -35. And yet still I ran.
It is an interesting feeling: If I was going to cook myself for dinner, after feeling my butt, I would have to say I need to thaw out some more.