I think it's inexcusable and disgusting not to shower daily. I shower twice a day.
Well, that's a judgement based on your own experience and culture. It's very normal in a lot of places not to shower daily. I couldn't even imagine showering twice a day on a regular basis.
Which brings me to my answer: Generally daily, but I sometimes skip a day if I'm not going anywhere or wake up late/am in a big rush... and sometimes twice if it's really hot/humid or there's sex involved
Usually morning, but sometimes night (like if I know I'm going to be pressed for time or am just in the mood). Sometimes I take a bath at night just to relax and then shower the next morning.
I am not a big fan of showers, tbh. I take them because I would feel gross otherwise, but I generally don't dillydally in there unless it's really cold/hot out and my shower is the opposite... or I'm in there with someone
I also am in a rush a lot, so I often have to stick with Carlin's four key areas and then next time I will worry about extremities and all of that.
I only wash my hair maybe twice a week. It doesn't get greasy easily and I hate doing it, even though it's easier now that it's short (I washed it even less frequently when it was long). I wash my face every few days (I've heard you're not supposed to do it daily because the oils are good for you) and I shave every few... oh, months
I shower once a day in winter and twice in summer but that sucks cause my shower rate becomes faster than my laundry washing frequency and it results in an occasional wearing of a jeans without a boxer and could lead to a zipper pull on balls skin upon quick zipping up and I have proven that to be the only way I can scream in the vocals of an adult woman.