Extreme Cold

We have been going thru a spell of extreme cold.  It has been wind chill warnings for days.  If you go out for 10 or 15 minutes you can get frostbite.  My lungs are not good, so it is twice as hard on me.  I have to go out every day and get my mail at the Post Office.  It is a real effort to do that in this extreme cold weather.  I use a cane and need a knee replacement, maybe two so I am not so fast either.  It is supposed to finally warm up to 30 this weekend.  I can hardly wait.