One I've found that can really warm you up at night whether in a sleeping bag or even a bivy sack is just to eat a candy bar. Great way to get your metabolism going when you feel like you are freezing half to death.
You bet, but the candy bar is the 'kindling' for the internal fire.
A co-worker of my wife runs a boyscout troop with her husband. The kids can earn a fifty below badge sleeping out. 5 nights at -10; 1 night at -20 plus 1 night at -30; 1 night at -50, etc.
The feed the boys a candy bar or two plus sausage right before bed. They call the candy bar kindling and the fat in the sausage is the overnight log.
Good point, Mike. Fat is required also. Combine both a cheese stick and a candy bar, and you have some good fuel for the night, certainly.
Last edited by 340boy; 01/18/17.
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