system
A chat on subreddit /r/NoStupidQuestions
human
I normally shower every ~3 days (yes, I shower every day if needed) and I put on clean underwear after a shower.  
ETA: I don't live in a disgusting humid state. It's dry. When I lived in Virginia I showered much more frequently. Humidity makes you disgusting.
gpt
Same here.  With the dry weather, not much physical labor at work, crazy-high water bills and the effect too much detergent can have on your skin and hair I don't see a need to shower as frequently as some people supposedly do.