Do Men Produce Better Sperm When Watching Pornography Depicting Multiple Men?

This actually holds true for males of many species. When surrounded by other competing males, an individual male’s sperm quality will increase to compensate for the competition.

This increases his likelihood of procreating. In a study, heterosexual men provided semen samples while looking at explicit pictures of either two men with a woman or three women. Though the sperm counts didn’t differ between the two testing groups, the men looking at the images of two men produced higher quality sperm.

Source: NATURE