In the Mormon church there is "sacred underwear" for both men and women.
My ex-husband converted to to mormonism last year. Wonder if he's into the wearing of the sacred underwear, haha, but not curious enough to ask. Would hate to hike in long undergarments! Agree, private parts need to breathe once in a while, otherwise unhealthy to be bound up all the time. Makes the loose flowy robes worn during Jesus' time and the Mu'umu'us the missionaries put on the Hawaiians seem to be a better alternative as religious clothing.