system
A chat on subreddit /r/me_irl
human
Why is it common sense to shower before you become unconscious but not before you are around people, who will smell you.

[EDIT] Since there were some responses
1. What is this "dirt of the day" everyone is talking about. I am getting into clean clothes in the morning, and I am not working in a coal mine. I understand anyone who works hard physically to only wash up quickly in the morning and shower *when they get home* but I tend to get those "dirt of the day" comments mostly from women. Are you not washing your hands regularly?

2. You sweat between 0,2 and 1 liter every night, anyway. Every healthy adult does. So unless you change sheets and nightgown every day, you are getting into sweaty, dirty laundry before you go to bed regardless of how well you showered before. Watch some of those videos, where they clean mattresses. The idea of going into a spotless and clean bed and then to remain that way for 6 to 10 hours is beautiful myth you are telling yourselves.

I think the main difference is whether you think you are basically clean and the outside world gets you dirty or whether you clean yourself to get rid of the stink your own body produces. I, too, wash up, particularly in the summer time, when I get home from work and change clothes. But I will also wake up covered in sweat or at least grease. Not showering in the morning and putting on some deodorant and/or perfume is like 16th century body hygiene, only a powdered wig is missing. It's what 6th graders do after PE class, when they haven't yet realized that they stink, when they sweat. It would be like using mouthwash without brushing your teeth to get rid of morning breath. Plus, covering bad smells with good ones only works so well, trust me.
gpt
Because when you shower before sleep your skin gets to recuperate while clean. Exactly the same with brushing your teeth. Being clean for a long time does good for them.