I’ve always showered at night, for the simple reason that I don’t want to have to get up earlier in order to take one in the morning.
When I was a kid, Mom made us all shower at night because there was no way to get my dad and the 5 of us kids in and out of one bathroom in time to get to work or school. I continued to be a night showerer for years out of habit.
My husband is a morning shower guy - even if he showers before bed after a grubby day - it helps him wake up. While I prefer to shower at night still, if I’m not exceedingly cruddy - like if I just have a sedentary day - I may put it off till morning. My hair is short, so whether I go to bed with wet hair or leave for work with wet hair, it dries quickly and pretty much always looks the same.
Both my husband and I shower at night. I loooove to go to bed clean. As for the hair, eh. As I’ve gotten older and styles have become more relaxed, I can usually work with my curly hair enough to make it presentable. If not, there’s always a ponytail. 
Okay, so the bedhead question has been answered but. . .what about sex? I mean, let’s say I shower before bed, get into bed, and things get. . .steamy. I don’t want to get up afterward and take another shower; I prefer to snuggle and go to sleep. But I sure as heck don’t want to go about my business for the next 24 hours smelling like, well, sex.
I shower in the morning, then, if I’ve had a particularly grungy day, I’ll hit the shower or bathtub before bed; but my default is in the morning, for reasons stated above.
If you have allergies to air-borne stuff like pollen, the night-time shower is the best. That way you spend a good long time completely free of the allergens.
Actually, part of why I like sleeping on damp hair is that in the morning, my slightly-wavy hair is a little curly and tousled, a look that would normally take me half an hour with a curling iron. But then, I also have a cut that works with that look.
I’ll usually just take a shower with a shower cap on the next morning, if the sex wasn’t too- um- athletic. My hair gets funny if I wash it every day anyway.
I take night showers. Part of it is because I have long, thick hair that takes a long time to dry, and I don’t like going around with damp hair, especially not this time of year. So I blow-dry it partly, pull it into a pony tail and then go to bed. Sex isn’t a problem, since I’m single and a virgin besides.
I shower at night! I worked for the Evil Coffee Empire (AKA Starbucks) for two years as a closer, and it’s no fun reeking the like bottom of a portafilter at 2 in the morning when you’ve just crashed into bed and you’re trying to fall asleep. And, I would somehow always end up with grinds in my hair. I did not care to find grinds on my pillow in the morning.
Over a year after quitting, I can finally walk into a Starbucks and actually smell the coffee…
exactly! and it’s way more comfortable to sleep clean. is this thread implying that it’s the norm to shower in the mornings (only)? 
btw, isn’t it bad for you or something to sleep with damp clothes/hair?
Not as bad for you as it is to walk around in 10 degree weather with damp hair (can you say pneumonia?). If your hair is wet in bed, the worst thing you might get is a mild case of eczema on your scalp.
I invariably shower twice a day:
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The morning shower cleans me up, softens my beard for shaving, my hair for combing, wash my hands for my contact lenses, and just gets me warm and going for a full day ahead. It’s typically a five or six minute thing, enough to throw some water on my face and get goin’ to git’er’done.
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The evening shower is where I relax. I usually spend ten minutes in the shower, warshing, but I do actually stretch out in the shower. The warm water and what muscles I have mix well, and I relax there. The driving factor is that I hate to go to bed ‘dirty’ [sub]g’head, call me obsessive compulsive[/sub]. But that’s the way I’ve done things for the past 11 years.
2a) After PT on my Mondays, Wednesdays, Fridays, I’ll hop into the shower just to clean up, but that’s more of a rinse than a shower.
Tripler
It’s tradition. I shower twice a day.
Morning showerer here. I cannot for the life of me understand how anyone can wake up from bed, where you’ve been lying several hours in a pool of your own sweat and dead skin cells, and immediately leave the house. I feel completely dirty after waking up in the morning, plus a shower really wakes me up. Not to mention, what do you do if you’ve managed to gain a severe case of bedhead overnight?
Adam
I have to speak up as one of the morning shower types.
Showering at night would do nothing for me. I only have clean sheets the day I put new ones onto the bed, otherwise, they’re smelling of Loki. I sweat at night, every night, even when I’ve got the window open in winter. I will sometimes need a shower at night, and then take it, but I don’t avoid the morning shower by doing that.
If I don’t shower in the morning, I feel disgusting all day. Skin-itching, miserably disgusting. It’s not that I am, it’s just that I feel that way. I don’t know why. Showering also helps me wake up, so again: morning is the best time.
However: as other posters have said, going to bed clean is nice; plus, I don’t blowdry my hair and it’s long enough that it takes quite a while to dry–and I don’t really like going outside and having it freeze, either. So my ideal day actually involves two showers: one nice long one in the evening to relax and wash my hair, one short one in the morning to get sufficiently clean to be able to enjoy my day.
Bedhead is sometimes a problem if I shower right before I go to sleep, but generally not enough of one that wearing a ponytail won’t hide it.
To clarify, I don’t let my hair get wet during the morning shower. It’s put up on top of my head and usually I can avoid getting it too far under the water.
I do both, the PM shower as it’s a nice way to end the day, and I don’t want to get into bed dirty.
And in the AM 1st thing, as it wakes me up right away.
I read something once that showering after a long day was more in the “Eastern tradition”, while morning showers were more common for Westerners.
I shower at night. Who wants to go to bed all sweaty and grimy? I don’t need a shower to wake me up, especially since I would have to wake up early to fit one in. I have a hard time sleeping if my skin is the tiniest bit sticky or gritty.
As for wet hair, I sleep with a head scarf. So I don’t get bed head. I also wash my hair only once a week, so it really isn’t a problem anyway.
The only time I’ll take a morning shower is it’s a Saturday or Sunday and I haven’t done much to get dirty the day before. But the moment I’m up, I rush to the shower.
(TMI ALERT)
When I’m on my period, I really have to take a night shower. Bleeding all day and then getting in the bed? Um, no way.
Hmmm this thread seems to have taken a turn toward the morning people.
Well, let’s brings things back to the ‘shower at night’ crowd.
I’ve always been a night person. I’m happy just to be able roll out of bed in the morning. Basically, I want the number of things I have to do in the morning to be at an absolute minimum.
As a few others mentioned, I never liked the idea of taking a shower and then going out into cold weather (I live in Boston). Never mind the fact that my hair might be completely dry. To me, taking a shower in the morning makes the morning weather seem even colder.
I prefer to shower at night, both because I like feeling clean when I go to bed, and it is more pleasant to make love with someone who is clean, so mrAru and I tend to shower in the evening. If I am working, or plan to go out shopping and have made whooppeee the night/morning before I shower then as well. Though in the summer when I am hot sticky and sweaty I may shower 3 or 4 times in a day because I hate feeling and smelling yucky.
Conserve water shower with a friend =)
Hm, No Mercy for Swine - Cherry Poppin Daddies?