> without a good scrub with some soap in all "enclosed hairy regions" you will most certainly have quite strong body odor.
This is not true in general. Maybe there are outliers.
The mechanism by which washing kills bacteria is by simply pushing them off your body down the drain. Soap's only purpose is to remove oil, which water does not rinse off by itself.
As a general rule, try rinsing first; if it still smells bad, then use soap. I exercise daily and sweat a lot pre-shower. A rinse eliminates all body odor.
This is not true in general. Maybe there are outliers.
The mechanism by which washing kills bacteria is by simply pushing them off your body down the drain. Soap's only purpose is to remove oil, which water does not rinse off by itself.
As a general rule, try rinsing first; if it still smells bad, then use soap. I exercise daily and sweat a lot pre-shower. A rinse eliminates all body odor.