How do you convince your parents that you aren't sick?

A fever is the heating of your body temperature to let your body know that your immune system is fighting off a virus. This temperature also lets the body know to make more virus-fighting substances, such as white blood cells.. This process uses a lot of energy. You will possibly break into cold sweats during this process, causing dehydration if you don't drink enough liquids. The process will also most likely cause a runny nose.

If you somehow raise your body temperature without being sick, you are going to waste a lot of energy for no reason.