system
Given the following post, respond as if you're commenting on Reddit:
human
Does your body use more or less energy when it is sick?

Hello AskScience. I was wondering if the body uses more or less energy when it is sick. While sick people usually stay in bed and don't move around much, they still consume food and have temperatures straying from their normal baseline. I imagine the body is expending a lot of energy to do that, but of course I am no scientist so that is why I am posting here. If possible, it would be neat if a number can be put on this (energy used sick versus baseline).

EDIT: I ask this because I am currently sick and lying in bed, but eating a ton.
gpt
I'll give you a quick answer - hopefully someone else can go into more detail. 

As a broad generalization, you use a lot more energy when you're sick. The process of fighting off an infection, raising your body temperature, and repairing tissue damage is very energy intensive. 

However, your appetite also usually declines dramatically when you're sick (your case obviously doesn't conform). This is because the process of digestion and processing of nutrients itself is quite energy intensive. When ill, human bodies most often derive their energy from the breakdown of fat and muscle tissue (catabolism) rather than from the concurrent digestion of food. This provides a stable, constant source of energy for the duration of the illness, at which point appetite usually returns with a vengeance. This is also one reason people who are sick are encouraged to eat bland diets rich in simple carbohydrates, electrolytes and clear liquids, rather than high protein or high fat meals. 

Your case is obviously different. Perhaps you could give more details?