I hate being cold. (one of the main reasons I moved to Bakersfield, CA.) Wearing a hat helps. I have heard that you loose 90%of your body heat out your head. Socks and hot baths help too. I would say exercise, but your ankle is messed up. My daughter bought me an electric throw blanket for when I sit on the couch. I use it in the winter time. (which won’t be HERE for a few more months. Still getting in the 90’s every say. ) Good luck!