system
Given the following post, respond as if you're commenting on Reddit:
human
What process creates heat in condition called "fever"?
gpt
The processes that create heat are the same processes that create heat normally in warm blooded animals. Metabolism of glucose for energy, muscle contractions, and in some cases deliberate metabolism of fat generate your body heat.

What changes in a fever state is the "set point" for your body temperature. The Hypothalamus is responsible for maintaining your body temperature, and when a fever is indicated, the hypothalamus releases signaling factors that increase the set point for your temperature. This is similar to how it works in your house: If your thermostat is set to 70f, and you turn it up to 75f, the house will get warmer. Typically, this simply means that the furnace in your house will stay on longer/burn more fuel. The same goes for your body.