ReachFor24 t1_isj4k2p wrote on October 16, 2022 at 11:29 AM

Reply to comment by DigNitty in TIL: Sperms were thought to move by wiggling their tails side-to-side, like eels, for 350 years. But research shows that they roll as they move forward like a spinning top. by vect77

My speculation is that the spiral cleans out the urethra, especially post-ejaculation. It's why it's a lot less common for men to have UTIs than women.

JustinTruedope t1_isj5p4q wrote on October 16, 2022 at 11:43 AM

That’s not why lol, might be a small contributing factor but it’s primarily due to the length of the urethra (and thus the ease for pathogens to “climb-up” to the bladder