All Your Pregnancy Questions, Answered

Credit: Istockphoto

Is it true that certain sex positions give you a boy or a girl?

I wish I could say there was some magic position that yields a boy or girl. The fact is, it’s the luck of the draw. Semen contains millions of sperm—half with an X chromosome, half with a Y chromosome. Whether you’ll have a bouncing boy or a giddy girl in nine months is determined by which sperm (X or Y) reaches the egg and fertilizes it first.

Countless studies have looked for a relationship between sex positions and gender and come up empty. (Same goes for methods of timing sex around specific days in your cycle.) So no need to twist yourself into a pretzel... unless you want to, of course!

Next: Why do innie belly buttons pop out during pregnancy, but not weight gain?