5. Loss of Appetite
Loss of appetite is common when our bodies are in defense mode. The body is pooling all its resources into curing itself of infection.
Eating and digestion take a lot of energy in themselves, and often the body will reject eating in favor of using those precious energy reserves to chase off bacterial or viral imposters.
The prioritization of biological functioning is a regular part of the process, though it is wise to be still eating light, easily digested meals, such as soup, and to be drinking plenty of water. The fight takes energy, and the body will use a lot of fluids in the process.