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Save the swimmies! Photo: futurowoman. Perhaps it was flipping a motorcycle at 90 mph on Infineon Raceway.

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Anatomy, biology, and body image. We're here for all your questions, concerns, and insecurities. Ask away!

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Sperm in the first fraction of ejaculate are more numerous, move more and present better quality DNA than those lagging behind. This is the conclusion of a study led by the Ginemed fertility clinic, which confirms that while the objective of the first fraction is to fertilize the egg, the second phase is so that no sperm from any other male has a chance to fertilize it. A study led by the Ginemed Assisted Human Reproduction Clinic analyses the advantages of using fractions of ejaculate separately in in-vitro fertilization as a way to improve the sample of the semen.

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We've all heard the rumors about sperm—pineapple, hot tubs, ladies who are allergic. But what's the truth? We consulted the experts for the facts:. It's Fast and Furious, Right from the Start Get this: The first moment of ejaculation contains the highest concentration of sperm, says board-certified urologist Harry Fisch, M.

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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.

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Update: A previous version of this article contained quotes from an expert whose credentials are now in question. We have reached out to him for confirmation of those credentials and have not heard back. You can read Gizmodo's investigation hereand his response here.

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Source: Youtube. Of course, it varies between men naturally and because of certain circumstances — but science has prevailed and tested the average amount. This Oakland University study gets into the nitty gritty of it:.

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Soap opera villains with ulterior motives can stop reading. Everyone else, listen up: There's a lot you can do to thwart accidental pregnancies—they're usually the result of birth-control cluelessness or carelessness. According to the Guttmacher Institute, each year more than half of pregnancies among American women are unplanned, primarily because the women did not use contraception properly or forgot to use it at all.

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Six months previously, he impregnated a woman in a lesbian relationship, whose partner believed the sperm was inserted artificially. Having initially interviewed Terry and Tim while researching a feature for LondonistI went on to speak to a dozen more would-be natural inseminators in the course of an undercover investigation for Cosmopolitan. Out of all the men whose ads I answer, Tim turns out to be the only one who has thought about the consequences.

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You can get pregnant even when you are on your period or any time you have vaginal bleeding. For example, a woman can have vaginal bleeding when she is ovulating. You are born with ovaries and they are filled with hundreds of thousands of eggs. When you reach puberty, your ovaries make estrogen.

Comments

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