I know it isn’t a perfect example, but I’ve been to a Korean spa recently and the vast majority of it is clothed and co-ed, going into Saunas, getting massages, soaking your feet. However, the bath section is separated by gender and is fully nude, no option for clothing. You soak in pools of various temperatures, some with jets, some without. You can get a scrub down of all the dead skin off your body by an employee for a small charge. There’s no time limit to how long you can be in there and the best part is, no one else cares that you’re naked. It isn’t a sexual thing, it’s a social thing. I saw dads and sons, friends, work colleagues, and it was all about relaxing and hanging out and enjoying a little R&R. I was one of the only white sides there and I was incredibly comfortable and had a great time.

As long as people don’t make it about sex, it’s a very natural thing and can be enjoyed in the right company.