6.
Men with two penises actually exist. If you’ve ever seen an adult movie featuring a porn star with two penises, then you may have wondered if it’s real. Yes, it is! Diphallus is a condition that affects about 1 man in 6 million, but it’s even rarer that both of the penises are actually functional. Men born this way often suffer from other conditions, too.
7.
You may not know it, but a woman releases only one egg each month in most cases. That makes for one chance to procreate each month. By comparison, there are about 300 million sperm in just one teaspoon of semen. That seems like a large difference, but the truth is that a very small percentage of these swimmers actually make it to the uterus and even a smaller percentage survives it before it fertilizes the egg. One of these little guys is enough for pregnancy, but sometimes not even one of the 300 million of them make it to the end!
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