Shower gel all over for me, including undercarriage. Oh, and I throw my shower poufs in the washing machine regularly - and they're always hung to dry between uses.
I'm a thrush and cystitis sufferer but thrush only arrives if I've taken anti-biotics for something, or - as I discovered many years ago, if I allow tampons to dry me out.
I started using KY on the tips of tampons at the beginning/end of a period when the flow would be temperamental and haven't had a bout since. Even after anti-biotics.
I've come to the logical conclusion that shower gel does not cause problems for me, but we're all different.
Feet are a must, sorry. We can't see all the flora and fauna blooming over our skin and I'd feel unclean if I didn't wash skin that has the potential to sweat a lot properly. I used to work in a small hospital and regularly saw cases of really bad fungal infections where the legs would be covered to the groin that started with mild Athlete's Foot. I understand that washing alone won't kill the fungus, but careful washing AND drying goes a long way to helping prevent it.
I remember watching one of those doctor programmes a while back and they tested digs shared by four blokes. They were swabbed in various places and they ALL had faecal matter on their Achille's tendons.
Do the people who don't wash their feet also not clean their showers/baths under the same train of thinking that running water does the job? Or not run an occasional hot wash to get rid of bacteria in their washing machines?
I'm definitely not one of those OCD clean-freaks, but ew. Basic body and home cleanliness is a must, sorry.