on this we are on the same wavelength.

Per Dr. Shettles theory, if the results of research is true and the female sperm lives longer but is slower moving than the male, then if a couple wants a girl they should have intercourse at 3-5 days prior to ovulation, but then stop till after the woman ovulates. This will increase the chance of ONLY female sperm being alive when the sperm comes in contact with the egg. On the other hand, if a couple wants to have a boy they should refrain from having intercourse until 2 days prior to ovulation and then have intercourse daily until ovulation has occurred. It has also been suggested that a man drink a big cup of caffeinated coffee or a big caffeinated soft drink before intercourse to help give the boy sperm an extra little push.

The position is also important as it is believed that deeper penetration will help the sperm reach the egg faster. It is suggested that if you are trying for a girl to have intercourse in the missionary (man on top) position and if you are trying for a boy to have intercourse doggie-style which will get the sperm there quicker. In relation, during an orgasm a woman’s body releases a substance that makes the environment more alkaline which favors boy sperm, so if you are trying for a girl the woman should refrain from orgasm’s during intercourse.

Peg Walker, 42, from Clarence Center, New York, is convinced she conceived the two children of her choice because she followed the advice of a book on predicting ovulation. According to the late Landrum B. Shettles, M.D., Ph.D., author of How to Choose the Sex of Your Baby (Doubleday, 1997), female sperm outlive male sperm but swim more slowly. He reasons, therefore, that the shorter the interval between intercourse and ovulation, the greater your chances of conceiving a boy. When trying for a girl, Dr. Shettles recommends you stop having sex two days before ovulation.

For instance, in eighteenth-century France, men who wanted a boy would tie a string around their left testicle because they believed that male sperm came from the right (sounds painful)

First, I'm blessed with many children, Alhamdulillah.

Secondly, yes you can succeed in determining the gender. We succeeded for all other kids other than the first one which no formular was used.

See graphics below that I did:
- assume 28 day monthly cycle
- she mensurates from day 1 to 5. These are unclean days.
- safe days are from 5th to 11th approx
- unsafe days are from 12th to 20th approx. It means, she is fertile only one these 9 days!!

To have girl:
- always stop sex at begining of unsafe day i.e. 12th.
- Do not attempt anything until 21st. What happens is, Y chromosome responsible for boy will die within 48 hours.
- The strong X chromosome will survive for about 72 hours (heavier with more food) and it has higher chance to fertilize the egg when it gets ready at around 15th or 16th.
- Do this religiously until one day she ovulates around these two days 15th and 16th, pap!

For a boy:
- you must be strong enough to run a marathon through the unsafe days.
- Both chromosomes will be available when she ovulates, but the Y will beat X in the race to finish line (coz it's lighter and faster, no wonder they die easily)