system
A chat on subreddit /r/NoStupidQuestions
human
Seriously. My answer was going to be &lt;1. Like 24 hours is the absolute longest, assuming ideal circumstances.
gpt
Yep, shower to shower at the absolute max.  

If I take them off to change into workout clothes, they *might* go back on after I shower, if they were already fresh that morning after a previous shower.  

Usually not though.