How to make your fever worse?

I know a lot of you will lecture me for this, but how can I make my fever a tiny bit worse. I haven't been feeling well for a week but no one in my family seems to really care. My temperature is just gone up a bit so 37.5 Celsius so not to bad, but I want it to go up a bit, like maybe around 37.9-38.5ish. How could I do this?
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Yeah... sooo I kinda realise this was stupid hahaha. I'm now just focusing on making my initial sickness go away... But thanks to all the people who gave me good ideas and to the people who told me off hahha.
How to make your fever worse?
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