Here's why:
* Fever is a defense mechanism: It's the body's way of fighting off infection. A higher temperature makes it harder for bacteria and viruses to multiply and survive.
* Increased metabolism: To raise body temperature, the body needs to burn more energy. This means your metabolic rate goes up, causing you to burn more calories and feel more tired.
* Immune system boost: Increased metabolism also helps boost the immune system's response to infection by providing more energy for white blood cells to fight off the pathogen.
So, while fever can make you feel weak and tired, it's not due to a decrease in metabolic rate but rather an increase in energy expenditure to fight off the infection.
