|>>|| No. 5937
I've always tried to go for every day, but if we're all being honest you don't need to every day, especially if all you're doing is sitting about the house. Daily showers are mostly just a perfunctory five minute rinse; you have the "proper" shower or a nice soak where you lather everything up and scrub your hair every two or three.
I think three days is definitely the longest your interval should be though. I've been through periods of crisis depression where I really couldn't even look after myself, and it allowed me to become intimately acquainted with the way grime accumulates on the human body. Even at a baseline of "sitting on the sofa watching telly", without any heavy activity, you're greasy after two days, you start to smell noticeably at three. Beyond that your dead skin gets flaky and gunk accumulates under your nails from scratching your head etc after four days. After five your ballsack/arsehole will start to smell utterly rank and the various folds/clefts of your body will start to get red, sore and inflamed as the grease, sweat and bacteria accumulates. A week or more and you start to look and smell like a homeless person, even if all you've been doing is sitting on the couch.
Humans are pretty disgusting.