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Spermbots for impregnation
Triathlon: The Beginners Guide: Finish your first triathlon; training tips and racing secrets to make you a faster triathlete
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(Amazingly, after sexual intercourse, sperm can stay alive in a woman’s reproductive tract for at least five days, especially if they’re protected by fertile cervical mucus. Which means a couple doesn’t need to have unprotected sex on the exact day that a woman ovulates in order to get pregnant; there’s a window of opportunity of approximately thre
... See moreShanna H. Swan • Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race
In a healthy, fertile man, the testicles produce 200 million to 300 million sperm cells per day, only about 50 percent of which become viable sperm.
Shanna H. Swan • Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race
Every sexual competitor seeks to disqualify their rivals from breeding opportunities. Most animals fight for territory or harem rights. Humans generally (though certainly not exclusively) do the same combat in the psychological. We seek to disqualify sexual competitors by calling into doubt the sexual credibility of a rival. “Yeah,
Rollo Tomassi • The Rational Male
