Hmm...all I can say is: No. I don't "do" 18 degrees, feels like 6 degrees. I mean, honestly, I don't have the gear! And I grew up in Saudi Arabia. I am not built for that kind of cold. I'm just not.
Instead I will be here:
Yes, that's my bed, and yes, those would be Martha Stewart and L.L. Bean flannel sheets. It's OK, you're allowed to be a little jealous.
Needless to say, my run will take place indoors.