A lot of numbers are thrown out there about the lifespan of sperm but here's the scoop: sperm can live as little as a couple of hours or as long as five days after sex. Once inside the vagina, the lifespan of the sperm depends on the woman's vagina, uterus, and fallopian tubes. Without fertile cervical fluid, sperm won't survive longer than a few hours inside the vagina or uterus if they make it that far. Many sperm die off in the very acidic vaginal canal within the first 12 hours. If they can make it past the uterus into the fallopian tubes using fertile cervical fluid channels, they can live there, waiting for the release of an egg. On average, each time a man ejaculates he releases nearly million sperm but it takes just one sperm to fertilise a woman's egg.
Here's how long sperm actually lasts for after sex
Female Reproductive System | Cleveland Clinic
He has authored six books and numerous articles on sex education, relationship dynamics, parenting and counselling. Account Options Sign in. What the FUQ? What is it about sex, a universal biological function, that makes it so difficult to understand? As much a part of life as breathing and sleeping, it nevertheless remains a subject riddled with misconception and mystery.
Facts about sperm health and lifespan
Sperm is half of what begins all human life and ensures our survival as a species by helping to populate the Earth. The importance of sperm is taken for granted because a man literally generates millions of them each day, and just one ejaculation can release approximately , sperm, but only a mere of them survive to reach the ovum. The amount of time that sperm can live inside of a man varies depending upon the quality of the specimen, but on average they can survive stored in the testicles for up to 74 days.