> fasting and being cold
I wish it was that simple.
There are some compelling metabolic arguments, and my own anecdotal evidence, that make this an inconsistent theorem on why I’ve been cold at night.
The first appears to be general metabolic changes that I’m undergoing recently. I need more insulation to stay warmer. Perhaps it’s a result of lower amounts of body fat, and maybe higher levels of metabolism as a result of better fitness.
My coldest night was after a non-fasting day where I ate a ton of calories, including a late, high fat dinner. I think a 28 deg F night with a 14 oz 40 deg F quilt is more of a culprit than fasting in this particular case.
But – the 30,000 foot view demands that the relationship between intermittent fasting and being cold can’t be ignored or discounted, and I’ve been researching to try to study this more.
From what I’ve found, it seems (in men at least) that body fat reserves are a more powerful hedge against sleeping cold than metabolic intake (military research).
More data needed!
But my days with a 14 oz quilt in the mountains may be numbered, especially with such a thin insulating jacket like the Torrid Apex that I took on this trip!