I wear a 3 layer cloth or fleece mask in the cold when I am up North. My body craves its walk. As a child, I almost always wore a scarf over my face in winter - until I became a too-cool-for-that teen😉

I need to push myself to do the walking outside in spite of the cold and yes I can but keep saying "too cold". Bad excuse especially since I have a concrete deck outside that surrounds the "money pit" and would give me a good path. I need to get my mind set turned around.
So now that I've admitted this, I have to get out there and do it! Maybe.

I find that when I wear the 3M N95 mask in public or outside it helps bring up the mucus/mucus plugs, after I take it off, and I think that is because I am breathing in my own warm moist air/breath. So as Sue said, and I do bundle up in this cold weather...we need to bundle up around the face beside the torso, legs and hands etc.

What I do is walk in the house even though it is not a long path but it works as I go from one end of the house to the other and back. One of the exercises I do is to sit in the bed, support my back and neck and do a movement with my legs as if I am riding a bike. A bit of aerobic exercise movement for me.
Illinois, (or Minnesota for the wintering Minnesotans) is a bit colder up that way than OKC in the winter!
Barbara