Sperm can live for up to five days inside the female reproductive tract. Outside of the body, sperm can live for up to an hour at room temperature. Sperm can survive for decades if properly frozen by ...

Sperm have a temperature-sensitive “thermostat” called CatSper that activates when temperatures exceed 33.5°C (92.3°F), explaining why testicles need to stay cooler than body temperature. Seminal ...