Has anyone experienced a raise in body temperature, especially on fast days?
This topic contains 15 replies, has 14 voices, and was last updated by Fasterplease 4 years, 1 month ago.
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Like mynameisrio, I’ve felt chilly on my fasting days. I attribute it to having fewer calories to burn, because I don’t experience this until mid afternoon. I live in a cold climate so I pile on the layers in the afternoon. Interestingly, after eating “supper” on those days, I often have to peel layers off.
Just guessing with this post.
I believe peristalsis plays a role in feeling cold. Peristalsis is the wave like motion the stomach makes when mixing contents of the stomach into a ball before passing to the intestinal tract. My understanding is that the friction of this action cause some heat. After periods of time it triggers sensitivity signals that co inside with eating and sleeping behavior. In this is reason why we sometimes get sleepy after after lunch, very sleepy hours after dinner.
So when we start fasting There is less friction. It’s an illusion though , the heart regulates the body temp. However our coping mechanisms are not being signaled.
What I do is try to do something similar to friction like moderate activity if I’m feeling cold. I haven’t figured it out , because too much activity on an empty stomach makes me have hunger pangs.
I’ve been trying practice other strategies to take advantage an empty stomach. Like mornings of 50 calories where in take dried fruits and nuts with a glass of antioxidants. And some moderate exercise to poke my metabolism out of ‘sleeping metabolism. Followed by more antioxidant rich caffienated teas shortly after to help feel full.
I get it as well. Actually its a really easy way of telling when I enter ketosis. I water fast and as soon as I get a warm stomach I know Im in ketosis. Confirmed this with a keto meter. I posted a question about this on Peter Attia’s blog and it is a known phenomenon. You have to burn a lot of calories just to access the calories stored in the fat cells.
I am on my first day of fasting, i have split the calories in two meals, breakfast and dinner, with an apple at lunch. By 17 00 i began to feel feverish and also feeling like my body temperature is slightly up. A little lightheaded too. If this is a sign i am burning fat, i would be surprised that the diet worked in such a short period of time.
I have an hypothesis which may be true in a few cases, though probably there are other things going on in most cases.
Overheating in the body is commonly associated with liver damage, and 60% of people in the western world have some damage to their liver (even if they don’t drink processed food, fizzy drinks etc). My theory is that in a state of deep repair the body will start cleaning up the liver.
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22 Aug 13