system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do you always feel better after a shower when you're sick?

Is there something actually happening or just a placebo?
gpt
More than likely your body is dehydrated from trying to make you not sick, and a shower helps rehydrate you, if only a little bit. Plus, if your ailment has something to do with your sinuses, the hot steam of the shower will help alleviate some of the build up in there.