The late Dr. Landrum Shettles a renowned expert on baby gender prediction methods developed, after years of research, a gender selection method that he felt was “best supported by scientific evidence”.

He authored a best selling book explaining his three step baby gender selection methods called How To Choose The Sex Of Your Baby. You can find a link to the book at my site below. Dr. Shettles claimed a 75%-90% success rate using his methods. You’ll find ebooks offered also that use Dr. Shettles methods as well as other baby gender prediction techniques, that have given many thousands of couples an even higher success rate of up to 98% in choosing the sex of their babies.

The Shettles method is based on the fact that it’s the man’s sperm that determines whether a baby is a female or male. This is because the woman’s egg carries only the (x) or (girl) chromosome, and the man’s sperm comes in two varieties, one carrying the (x) or girl sperm (which results in a girl baby) and the (y) or boy sperm (that results in a boy baby.) Dr Shettles also realized that the girl sperm was physically larger, stronger (longer lived), and a slower swimmer (slower to reach the egg.) The boy sperm is smaller, more fragile (dies off quicker), and is a much faster swimmer (will win the race to fertilize the egg most of the time.)

The good doctor also determined that the timing of conceptual sex, as well as the depth of penetration (especially at the time of ejaculation) had a profound effect on the sex of the baby. In order to time conceptual intercourse precisely the mother-to-be will have to learn to track her day of ovulation precisely as well.

If you want a baby boy you should abstain from sex until just before ovulation (24 hrs) than do the deed as often as you want (more is better) until the second day after ovulation. Using positions that allow for the deepest penetration (doggie style, or missionary, but with the womans legs extended up by her head) are best. The reasoning behind this is the fact that you will be depositing the sperm very close to a fresh waiting egg, allowing the faster boy sperm the opportunity to win the race, giving you that little boy you desire.

If a girl baby is desired, the couple should have sex practicing only shallow penetration, and abstain from sex for a couple of days before ovulation and until a couple of days after ovulation. Here again this gives the short lived boy sperm to much time and distance to survive and allows the slow but longer lived girl sperm a time and distance advantage, and assures (hopefully) conceiving a girl baby.

Dr Shettles determined that vaginal acidity also plays a role in which sperm succeeds in fertilizing the egg. He found that a lower ph (higher acidity) favored the girl sperm and a higher ph (lower acidity) favored the survival of the boy sperm.

Don’t leave anything to chance (if you are serious about choosing the gender of your baby.) You’ll need a guide to take you through the entire process step by step. You’ll find these guides at my website, so pick one up and raise your chance of success from a mere 50/50 to well over 90%!

So how to make sure you will have a little baby girl?? Visit my site to learn How To Have A Baby Girl or visit my main site to learn How To Have A Baby Girl Or Baby Boy