I have virtually no circulation in my toes. I now use an electric foot warmer in the office. wonder if I have diabetes. anyway, this time of year I resort to adding heat & winter boots. but toe warmers also work in regular shoes if it's not frigid out. just loosen the laces get the foot in & re-adjust the laces
when it's really bad I use hand warmers, (usually w/ less tape than this) hehe
