I know people can get fevers up to +100f/37c. So why can’t our body just flip a switch and turn on a fever essentially. I have plenty of “stored” energy so I don’t see how that would be a problem.
In: Biology
Think also about the temperature difference that you are referring to. Your core body temperature is around 98 degrees F. To get to 101 is only three more degrees F.
If you are feeling cold in 30 degree whether, that 3 degree increase in heat isn’t going to change the game for you. You’ll still feel cold at 33. You’ll still feel cold at 36, 42, 45… and so on. The amount of energy you would need to spend to get up to the point where you don’t feel cold is tremendous and beyond the capacity of your caloric reserves.
Also, your body DOES try to heat itself up when you are cold. It has brown fat cells that are purposed to generate heat, specifically around your internal organs. You also have processes to make you generate heat through shivering. These systems just are not capable of generating the amount of heat that you are looking for.
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