It’s kind of hard to believe your body creates swimming, gene-toting cells designed to survive in someone else’s body. Not just that, but these are produced in the millions, all day, every day, for your entire life. Whether or not you’re hoping your sperm will make you a dad someday soon, you should brush up on information about these special creations and what yours may say about you. For just that purpose, we’ve enlisted the expertise of Michael Eisenberg, Director of Male Reproductive Medicine and Surgery at Stanford University Medical Center.
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