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Hypocrisy_Central's avatar

[NSFW!!] Boring question #28: How fast is human sperm travel wise if scaled up to our size?

Asked by Hypocrisy_Central (26879points) July 25th, 2011

[NSFW!! NSFW!!] I have heard time again that if a female has un-protective sex the male ejaculates into her, she can become pregnant even if she douches. That got me to thinking, sperm is microscopic that means one inch is a very great distance for sperm to cover. If a woman makes it home and takes a shower, douches, or rinses herself out with a turkey baster, etc what would keep her from being able to intercept it? I heard an estimate is that sperm can swim up to 8 inches in an hour. Again, they are microscopic, so on a human scale would that be equal to a speed greater than mach 8? I can’t see how something that small can travel that far that quick.

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15 Answers

linguaphile's avatar

The average speed of a spermatozoa is 1–4 millimeters per minute.
1 inch = 25.4 millimeters.
If you want the little swimmer to travel 8 inches… it will need to travel 203.2 millimeters.
So the little guy has to paddle for 50.8 minutes to 203.2 minutes (3 hours, 23.2 minutes) to cover 8 inches of distance.
I can’t believe I just did this math. O_o

Hibernate's avatar

LoL. Interesting question. Though I do not know the exact speed. Seems @linguaphile did some math. He could be right you know.

Hypocrisy_Central's avatar

I was certainly off at mach 8!

creative1's avatar

The thing also is when a man ejaculates into a woman it shoots up into her not just sits at the opening of the vagina so it really also depends on how good of a shot he was for distance. When some men ejaculate it really can shoot pretty far depending on the man of course, so imagine that being inside of the vagina, it really wouldn’t have far to swim if he shot it pretty far.

Something also to consider when douching you won’t necessarily get all the sperm out so the little guys could still have a chance after the douching if they didn’t get rinsed out.

woodcutter's avatar

Ask Peter North, They will be able to walk the rest of the way.

El_Cadejo's avatar

Correct me if im wrong but I thought during orgasm the cervix convulses or dilates causing it to suck up any sperm. If this is the case I would imagine no matter how much washing you do at that point its too late.

Hypocrisy_Central's avatar

@uberbatman What if he nutted but she didn’t reach the Big ‘O’?

El_Cadejo's avatar

@Hypocrisy_Central then he fails :P but even still I would think it wouldnt work out in your favor

It is funny though how it always seems like everyone does these preventative measures(and rightfully so) but for some strange reason whenever people are actually TRYING to get pregnant they seem to have a hard time.

redfeather's avatar

why did this pop up in my “questions for you”? And why can’t I stop picturing a huge sperm chasing me down the street?

MRSHINYSHOES's avatar

I think a lot it depends on how effective the ejaculation was——how “far up” in went into the woman, as well as the sperm itself. I heard they’re superb little swimmers, especially if the man is fit himself, eats healthy, and has sex regularly, but not too often. When we men abstain too much, we produce less active and less vigorous sperm cells. When we have sex too often, the number of sperm is reduced. Therefore, the most active, vigorous, and healthy sperm are ones ejaculated regularly, usually once every 2 or 3 days. After 4 or 5 days, the vigor of our sperm suffers.

Hypocrisy_Central's avatar

@uberbatman It is funny though how it always seems like everyone does these preventative measures(and rightfully so) but for some strange reason whenever people are actually TRYING to get pregnant they seem to have a hard time.

I guess when people are anxious with anticipation it make the sperm swim way slower.

Berserker's avatar

Fucks if I know, but I got first place, man! I was all like, get the hell out mah way yall! ^^

woodcutter's avatar

@Symbeline Ha! We all started out as some pretty quick jizz huh?

MRSHINYSHOES's avatar

@woodcutter Well, I swim pretty good, must have all started way back then! lol

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