3D Ultrasound Images Show That Male Babies Masturbate In The Womb Female Masturbation Doesn't Cause Infertility: 10 Things to Consider Did you know that male fetuses may be more vulnerable to stress during pregnancy? This is often described as the Fragile Male Hypothesis, which suggests that male fetuses may be biologically more Masturbation: Why it happens and what to do about it BabyCenter 4 Things you can do to help conceive a Baby Boy First Fertility