I know everyone has the opinion that cold weather does not effect your band, I disagree. I live in Texas and we have mild winters. BUT, there have been 4 days that it has gotten down to the 20's & 30's and on those days I could not eat!!! So, I think every body is different. I know that cold weather definitely effects my band and I won't argue the matter with anyone because I am cold everyday, there is a difference! So, don't think you are crazy if you feel the same way! lol I understand Iron, losing weight etc. But, I still feel there has been a difference on these cold days for me.