I’m a twice a day person. When I was in Germany I told my host that I would be showering twice a day and she was aghast — she said that it was unhealthy for the skin and that there was a cost to the environment in terms of water usage and chemicals down the drain.
I hear that, but to me showering goes beyond cleanliness. I do it for the mental health benefits. It’s my time to unplug from the stresses of the day, to think quietly to myself (bathroom ideas are a real thing), and to feel squeaky clean before the day starts and before I go to bed (the mental health benefits of a good nights sleep is significant).
Showering is as psychological as it is physical.
I once went on a camping trip where I couldn’t shower for 3 days. My body felt like it was overheating and I was irritable the whole time.