Going outside is difficult here too, -20' wind chill today, with a high temp of 4'. This is such a difficult thing for me, but I'm using the treadmill. It hurts my knees if I go too long, but it is what it is.
Make sure you are eating as well as possible. I drink tea now, warm or cold throughout the day.
Any exercise is better than none. I'm going to put my 1 & 2lb weights next to my reading basket and see how that works.
It isn't easy:grouphug:.