Question about the human reproductive system.

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      d9esco
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      I was wondering if someone could do some research or answer a few questions that they might already have knowledge of. I was wondering how many sperm cells are produced by the human body every minute hour or day at the age of 20. on average about how many sperm cells are in the human body. how long does a sperm cell live for. this is the the weird question I really wanted answered how many times are at how often do you think a male would have to masturbate to completely remove and replace all the sperm cells in his reproductive system.

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