When it comes to the old wives' tales regarding this topic, the myths are clearly false. Trying to have a bouncing baby boy? If so, be sure to warm the man's testicles before intercourse and keep your heads pointing north. It's best to have sex on odd days, too, as everyone knows those are the best days to conceive a male child.
After a little girl? Then it's best to wait for a full moon and have sex in the missionary position. On an even day, of course. And when you're completely relaxed, because stressed sex is boy-making sex.
When it comes to the science of the matter, however, there might be a small chance that you could influence the sex of your child based on what you eat. And we're not talking about the old rumor that red meat will lead to a boy and chocolate to a girl.
Research performed by the Universities of Exeter and Oxford in England determined that if a mother-to-be is consuming more calories at the time of conception, she could shift the 10 in 20 likelihood of having a boy to 11 in 20. The tipping point seemed to be an intake of 2,200 calories a day versus 1,850. Particularly useful foods were those rich in vitamins C, E and B12, as well as potassium and calcium [source: Highfield].