Fun Sperm facts every woman should know! October 19, 2009 - Sperm are produced in a man's testes — and it takes approximately 10 weeks for a single soldier to reach maturity stage.- Mature sperm can wait up to two weeks for their big day while they hang out in the epididymis i.e. the coil like st Previous Article Sex galore: Health benefits to make note of Next Article Contraceptives: Protecting Yourselves