Brrrrr, Laura. Thanks for all of the tips, including the indelicate one. I can't tell you how many times I have debated with myself while shivering in my bag--whether to get up and pee or just wait until the morning. I know I will freeze to death in the act but will warm up after the fact. It works every time, but I can be a stubborn wimp in the cold on occasion, and was last Friday night.

I have thought about drinking hot chocolate right before going to bed, but inevitably the stuff wants to come back out before the sun comes up. Chem warmers have done wonders for me before but completely failed me last Friday night when the wind was howling.

thanks again for all the tips.