Story perspectives
Humans Evolved Larger Penises for Reproductive Success
1/20/2025
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Story summary
- Humans boast larger penises than other primates, averaging 5.1 inches (13 cm) when erect. This evolutionary trait emerged as bipedalism complicated sperm delivery, prompting humans to adapt for greater reproductive success. Interestingly, while our penises grew, our testicles remained smaller compared to those of chimps and bonobos, highlighting a unique evolutionary path.
