Ok–I just got back from a weekend in MI. Temps probably only got down to 25 degrees F, but I still have a question/problem. I don't like breathing in the cold air. Maybe this sounds wimpish, but after a while my nose gets stuffed up and it's harder to sleep. So I've resorted to sinching (if that's the right word) the outer draw string to create about an 8 inch diameter circle. I then shimmy down into the bag and turn my face so that is not facing outward, but it removed from the side of the sleeping bag. I guess I sort of treat it like a warming "chamber" so that I am not breathing in the cold air. I sleep well doing this but have heard folks say that doing so will lead to water buildup in your down sleeping bag reducing the effectiveness of the down. I am only out for weekends typically and am probably ok but just wanted to see how others deal with this.
Do just have it where your mouth and nose are sticking out of the sinched bag in cold weather? Or do you have another method, similar or different from mine. I usually do this below 30 degrees. I have been as low as 5 degrees but that's about it.


