Thanks @Dimity! I was dreading the winter hitting because last year was so severe. I haven't done anything differently on purpose but coincidently I have spent more time outdoors, my kids have done winter sports for the first time this year which has required a lot afternoons and weekends out and about. I haven't enjoyed being out in the cold with people but it sure beats depression!

Oh that is not good, I'm sorry your health is giving you grief. Hopefully the op will relieve some of it for you? How long do you have to go?