Do not misunderstand Perfume/deodorant with soap !
I wash my hair every morning before work (or else, I look like a caveman XD).
for shower, it depends the season, if I transpired, etc.
Usually every 1 or 2 days, (more everyday on summer or when I feel dirty), though I clean my privates part everyday. if arms/body aren't dirty, other parts need cleaning more often.
Some jobs are really dirtying, some other aren't.
I don't get why we need to shower everyday either if you are clean, like if midnight render you dirty, 23h58 it's ok, but 00:02 ohhhh, new day, have to shower !
do not see it as "days" but as "hours or minutes". what decides which period of time you have to spend before you need to clean instead of just feeling dirty ?
it's like washing hand, I don't wash it at regular time, I just wash it when I feel the need.