Coldest barefoot walk was this morning with my dogs, 20 minutes, 38F (~4C). Went for a 5K run in about 45F at Noon.
If there is anything I am "doing" for this, it is accepting some slightly sore/cold/uncomfortable toes. That feels like the only action or decision I am making. Otherwise, the action I am NOT taking is putting footwear on my feet at home. Funny thing is, when it got down into the 50s(F), my toes felt a little cold and gave me pause; maybe I can't do this for very long?
Then it got down into the 40s and I had the same feeling (not worse, same). Cold feeling toes....*just enough* to remain conscious of my feet but no pain or alarms.
This morning, 38F for 20 minute outdoor walk, just a little cold feeling, again wondering how far I can go. Probably not much! Still, what a fascinating experiment. House slippers were a requirement for me last year and all the years before. First thing I would do at home is put on my slippers, but now I don't even think about it. Feels like I am going through a "shoe detox".