Why Do Men Have Nipples? - 12 Days of Evolution #7
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[MUSIC] [BIRD CHIRP] Look down. No matter what your biological sex, I’m willing to bet most of you have two nipples. If you can’t see them, they’re probably under your shirt. Some people have even more than two! But that’s for another video. It’s easy to see why females have two nipples. We’re mammals. It’s right there in the name. Dogs, cats, pigs and whales all have nipples too. Like us, they nourish their offspring with milk. Male nipples? [MUSIC] Not much going on there. If they’re not an evolutionary advantage, why hasn’t natural selection erased ‘em? Because my nipples are cheap, and they’re not hurting anything. In the eyes of evolution, male nipples don’t have much cost: Just a little more tissue. But deleting them from the recipe altogether, reprogrammi...
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[MUSIC] [BIRD CHIRP] Look down. No matter what your biological sex, I’m willing to bet most of you have two nipples. If you can’t see them, they’re probably under your shirt. Some people have even more than two! But that’s for another video. It’s easy to see why females have two nipples. We’re mammals. It’s right there in the name. Dogs, cats, pigs and whales all have nipples too. Like us, they nourish their offspring with milk. Male nipples? [MUSIC] Not much going on there. If they’re not an evolutionary advantage, why hasn’t natural selection erased ‘em? Because my nipples are cheap, and they’re not hurting anything. In the eyes of evolution, male nipples don’t have much cost: Just a little more tissue. But deleting them from the recipe altogether, reprogrammi...
